Notes on Glencoe Texts: CAN get free PD from textbook company!

Passwords:
earth science- FESCCA07
61F56c2b
Life Science - FLSCCA07
02ade4b1
Physical Science - FPSCCA07
f5fa8e24

- CDE blueprints for biology show what the students SHOULD learn in 7th grade that they will be tested on the 10th grade CST science test
- students can store foldables in plastic page protectors
_ Have an objective on the board at the beginning of each class
-family tree of roots, words, etc as a huge tree in the classroom
-online glossary of 13 languages!





Virtual Lab Answer key ONLY on teacher works

Thursday - NEUROPALOOZA

Check out QUEST!

Nerve pulses -

• good demo is dominoes taped onto ruler to show that pushing one makes a chain reaction
• how is it the same?
• chain reaction
• one way
• change in energy (up has potential energy, down needs energy to get back up)
  
• different?
• nothing goes up or down really
• show what happens if chain is broken
• can use mini candy bars!

Neuro Exam, "Rewiring the brain"

• tossing beanbags at target - 10 without goggles, 10 with goggles, then 10 more without.
• goggles using fresnel lenses (order at
  
• neuroexam.com

Pirate Wednesday!

Dr. Ken Miller's Evolution Website: www.millerandlevine.com

VERTEBRAE

• why do they all look alike?
• what is the function of vertebrae?
• evolution and natural selection is "good enough" not "the most perfect thing ever"

PIRATE eye patches - international talk like a pirate day is Sept 19th!

• wear it for half an hour, turn off all lights, then take of patch, you can see out of that eye and not the other!
  
• more rods than cones
• 120 million rods in one retina
• 6-7 million cones
• rods are more sensitive to light, cones 100x less sensitive.
• rhodpsin is chemical that absorbs the photon of light

http://www.calacademy.org/exhibits/skulls/

more eye tricks

• hold dim light up to bottom eyelash
• roll back and forth
• will see shadows of blood vessels! This is because the blood vessel is above the retina layer!
• BLIND spot
• ball of clay, washer, pencils - turn the washer sidways and thread the washer with a pencil
• weiner finger and hole in hand - brain is adding the images!!

resource Jane uses for growing plants - fastplants.org

Darwin activities

• age of Galapagos's islands?
• when did iguana's diversify
  
• no amphibians
• article on three types of radioactive decay
  
• solarium 128 decays into moonium 128
• half-life = 500,000 yrs
• our sample: 124 moonium and 4 solarium so divided in half about 5 time - age is 2.5 million years
• can use different numbers, as long as the ratio is the same

When did the species diverge?

• get one of two eggs - inside is a film can with paper on inside, with mitochondrial DNA.
• How many differences do you see?
• 6
• rate of change is 1 change per 1000 bases (pretend there are 1000 bases) per 2 million years
• therefore they diverged 12 million years
• but thats more than OLDEST island! So what could have happened?
• older islands sunk into sea?
• no fossils on south America of these organisms, only found in Galapagos
  
• FOUND a submerged island! this island is 15 million years old!

great resources on evolution

• from UC Berkeley - "Lines of Evidence"
• PBS site Evolution great! for showing missing fossil layer, how does evolution really work? etc.
  
• ENSI
• National Center for Science Education - legal side of evolution in classroom
• Kenneth Miller - expert witness in evo trials
• 
  

The Last Monday!

genetic corn in dark -
will ALL be white if grown in dark, when uncovered will become green

Just because a gene is dominant doesn't mean it is the most common found!
i.e. dwarfism (achondoplasia) like "Little People Big World"
AA is embryonic lethal, no babies like that ever
Aa is dwarfism
aa is normal stature

Similarities between right hands

• each is a trait, yes or no is variation

Evolution with beans activity

• bigger size is better
• for multiple periods, just leave beans and don't count them
• have strongest group have a "mutation" for 3rd round
• 
  

Amy's Lesson

• what are stoma/stomata?
• show students what they look like!
• if you pick a leaf right now in the daytime, stoma will be closed
• paint underside of leaf with clear nail polish
• when dry, put tape over spot and place on slide
• on slide, should see stomata - need to use high power

Tom's Lesson

• make shy kids talk by giving them too few materials

Rowena

• all music is made of notes just like all living things are made of cells
• for rap, circled vocab in red and then circled description in blue
• for test, have to fill in blanks on parts in test

Elice

• CSI DNA testing activity

Shannon

• www.biointeractive.org for free videos!
• hhmi.org

Candy

• roslyn franklin did background work for watson and crick
• where do you get A, C, T, G, from? From your DIET!!!
• TOMATOES work really well, especially heirloom tomatoes
• can do it where each group leaves out one step, what happens?!

Mary Margaret

• 
  

Thursday Notes

Designing experiment:

• want to see if the lactose pills work, instead of using drops
• questions:
  
• if you break down lactose, becomes what? glucose and glactose together makes lactose, so thats what it breaks down into
  
• what does it mean to be lactose intolerant? do not have lactase, which breaks down lactose
  
• pH of stomach acid? pH of 1-2
  
• Time is takes?
• temperature needed?
• rate of dissolving?
• inactive ingredients
• how is lactose free milk made?
• glucose level of milk originally?
• amount of enzyme?
• tested water, glucose water, reg. milk, lactose free milk, and reg milk + lactaide (lactase)
• waters showed that strips work, reg milk had no glucose, lactose free had 1000 parts, and after 5 min milk + lactaide had 750 parts which means the lactose in it had been broken down!
• bb's in cd case with PVC pipe simulates enzymes and substrate

SICKLE CELL ANEMIA

• very serious!
• genetically inherited
• shaped like a sickle
• harder to go through capillaries
• SICKLE CELL SCENARIOS
• act out situations where some have sickle cell and ask if they should worry about SCA in their kids
• not sure since sheila could be a carrier or not have it at all
• can do blood test
• use electrophoresis to run the blood -> sickle cells have less of a (-) charge so doesn't travel as far as the regular blood (regular beta globin)
• bag activiyt
• bags are like membrane, nucleus is another bag with DNA in it (paperwith pairs written on it)
• have similaraties and differences
• polar has magnet
• HAVE to find start codon first!!
• 
  
• 
  

Wednesday Notes

Pedigrees

• Online Mendelian Inheritance in Man
• most traits are polygenic
• IS possible to have two blue eyed parents AND child who has brown eyes!
• Data sheet for inherited traits, to practice math, and probability of others in class having same exact combo as you for those 5 traits (14^5 = 537,824)
• can look at percentage based on class, how would it change if more traits were looked at - would be more unique, percentage would go down until 1:6billion
  

DNA extraction from human cheek cells

• water THEN detergent
• if swish before will lose cheek cells!
• swishing loosens cells
• salt
  
• detergent pulls apart cell membrane
• phosphates on side of DNA, DNA is - charge, DNA is 1nm wide, so to see you need to clump together, so salt dissolves into water, becomes Na+ and Cl-, Na+ attach to DNA and help them not to repel
• alcohol makes top layer since less dense. DNA is less soluble in alcohol. water is polar, DNA has charge, dissolves well. Alcohol is not polar, so DNA doesn't dissolve. As soon as DNA hits interface, comes out of solution after molecules collapse.
  

Julie Yu's electrophoresis

• agar agar powder - used to make almond "jello" in chinese restaurants
• when heating agar in microwave, need to heat, stir, heat stir so it doesn't boil over
• DON'T do it day of!
  
• need to do it before solidifies
• comb needs to not touch bottom - needs to be a well, not a hole
• check out gene connections if you are in San Mateo
• combs only use once when wet, if can dry out then should be ok
• can do crime scene! 4 suspects and one suspect, which matches?
• use dyes from pens, sodas, food coloring
• Here's the picture!
  

Teaching Boxes SHARING

Maureen- ecology

• essential questions - what is biodiversity, what effects it, etc.
• find a space to grow some weeds on campus
• terrarium to model succession - start with a pond in a small aquarium, elodea, add a few seeds each day to make into forest.
  
• tell me about where you live, relate neighborhood or town to eco terms like species, population, etc
• check out biodiversity in weed patch
• two videos - rainforest's and SF bay
• what causes changes? two bottles with tops cut off, one is open, one has saran warp on top, measure temp
• Whats in the water? pony beads represent types of pollution in water. each color is different pollution, give them a "sample of water" (selection of beads) and graph amount of each
• online simulation about goldfish
• not native species - yellow star thistle, non native invading SF bay
• MIDDLE of unit on ecology

Ani and Geoff - Chemistry/dimensional analysis

• UNITS big deal, cancelling units, hard to teach!
• start in basic measurement mode
• take own food size and use as measurement to measure height - shorter person might take MORE of their own feet! Talk about need for STANDARDS in measurement
• metric balances - soda, tab up, clothespin on tab, middle of straw goes on clothespin, paper clip on each end, small dixie cup on each side - how many beans = one penny? how many beads equal 5 paperclips?
• 10 in. by 3 cm pieces of whiteboard, divide it to make their own ruler, directions for how they made their ruler, pass it on and see if the other group can do it
• then can teach set up for dimensional analysis problems, be really picky!

Tom -What is Science?

• Find out what they know
• film canisters - 32 with 8 different things, find someone that matches you - smells maybe? guess what the smell is! bottom of one is 103... 1+3+0 =4, match is 22... 2+2=4
• foot measurement again. If you are paying $2 for each foot of carpet, which foot would you want to use? Big foot or little foot?
• Making greeting card boxes activity, can do LxWxH to volume ratio
• box with foam shapes and marble in side, have to figure out the shape of foam piece - mystery box
• volume of fluids - 7 or 8 different shape jars, bottle, etc. Estimate how much liquid to fill up, guess then find out how accurate they are

David - 1st grade!

• measurement book - how big is a foot? grade level 1.9 by rolf myller
  
• need help sorting things, attributes
• measure length and width! Button Box
  
• have kids bring in collection

Tom - What Is Science?

• flexible for 6, 7, 8th
• video - "Minds of their own" - on misconceptions. On MIT engineering students who can NOT take battery, copper, and light and get it to light! Show students what NOT to do - think you know it all but you don't! ALWAYS ask questions
• Following Directions - last one says "don't do any of these!"
• Penny exercise - draw a penny to best of their memory, then project transparency with 15 diff. possibilities, they have to pick which is correct
• Establishing a theory - Checks activity

Shana - Conducting controlled experiments

• doing thesis on a handbook for doing a science fair
• need to focus on how to make controlled experiments
• Great Tomato Race - use ketchup packets, focused on figuring out variable, constants, etc. Students are asked to relate components to project, why repeated trials are necessary, etc
• Hot Solutions - add calcium chloride to water, how does adding more increase temp of water? learning about collecting data, transferring to calculation table to comprehensive data table, etc.
  
• diagram/chart of variables, etc
• practice problems, reading scenarios, fill out diagram for each story
• lesson on writing procedures and materials list

Brian/Tim/Alix - 8th grade astronomy

• focus on size and scale, phases of moon, looking at galaxy, sampling as statistical method (stars of universe)
• combining earth as peppercorn activity and using fruits
• hole punch earth activity
• toilet paper roll scale of solar system
• use overhead as sun, scale down others to compare with room sized light from overhead
• foldables - flipchart with each planet, each flap has facts and also scaled dot of planet

Bree - beginning of year review for metrics and graphing

• bowling ball ramp - have timer each 5 meters for 25 meters starting at bottom of ramp, release ball, time when pass each 5 meters, practice graphing
• practice massing using premade dixie cups, use square masses to practice weighing AND volume
• show on overhead what a good graph should have - units, title, labels, etc.
  
• graph straightening

Dorota/John/Galena - magnetism

• should already know static electricity, opposite attracts and same repels, know what current is (already finish electricity)
• Where is north with donut magnets we did with Paul at RAFT
• mapping magnetic field - use filings, magnet underneath, see how they line up
• link E&M - connect wire to both sides of battery, see how its attracted to magnet!
• spinning coil
• electromagnet - moving magnet makes electricity moves another magnet
• idea is not to SHOW but have them BUILD it in a lab (one per group)
• go outside, take lamp cord and spin around like jump rope, make light!

Amy - 10th grade bio, chem as it relates to bio

• beginning molecules
• atomic theory
• take a piece of paper, cut in half each piece until its very very small, well is it still paper?
• build an element with beads and pipe cleaners to show shells
• periodic table, elements, 4x6 cards with about 18 organic elements, each group has to do library research on it, and where they find it
• bonding, hydrogen bond, beaker of water, float a paperclip,
  
• wax paper, water on that, see water rolls around
• have them design own experiment for cohesion of water
• at the end, ask 5 key questions, ask them to answer it, don't even need to put their name on it!

Noel/Charles - 10th grade bio, polymers/monomers

• find polymer, beaded necklace, train, each bead is a monomer, the necklace is a polymer, what connects them?
• card game for polymers and monomers
• amylase and cracker activity, talk about starches breaking down,
  
• liver lab, denature it
• nutrients lab - test for all different types of nutrients
• act out polymers - separate from boys and girls, boys are purines and girls are pyrimidines, etc. "DNA Dance"
• Physical representation of amino acids to make something

Jane - genetics

• "Post modern mendelism"
• book - Garden Genetics: Teaching with edible plants
• light base for growing mechanism
• egg cartons for planters, fold newspaper in origami fold, put soil in, grow seedlings
• ORDER SEEDS weeks in advance!
• cucumbers - plant cucumber seeds. Have a gene that makes them bitter, some don't. Can taste in cotyledon right away if bitter or nonbitter! guess what cross is to make all of those babies
• tobacco seedlings, albino, not albino, also plant some in the dark - all ones in dark are white, but when put in light some will now turn green
• paper tabs DNA models

James - Physical Science/earth science

• plate tectonics
• plate tectonic maps, cut into plates, laminate, have to put in puzzle
• continental drift
• puzzle where pieces fit together to make Pangaea
• sea floor spreading, day 3
• two models
• +/- poles reversal, older material on outside, newer on inside
• combine into plate tectonic theory - convection currents in mantle
• take hot and cold water with food coloring, watch one mix and one not do anything
• playing with convection currents
• 5th day, list of long and lat for earthquakes, "graph" on map, will see edges of plates
• find how fast plates are moving
• get maps at USGS "Dynamic Planet Map"
• Book - plate techtonic history
  

Class Notes for Monday

Anemia Article Discussion-

• important when talking about cellular respiration
• reproductive tie in - girls more at risk because of periods
• vegetarians because of no iron
• blood doping - increases capacity for oxygen (opposite of anemia)
  

Microscope Imaging Station

• sea urchin fertilization
  
• c. fern discussion
• card matching game
  
• put in order - why did you choose what you did?
• good for intro to mitosis - blue is genetic material
• Micro Imaging Site
  
• Charlie Carlson
• for mitosis flip books!
• WILL HAVE STUDENT ORIENTED ACTIVITIES ONLINE BY FALL!
  

class for Friday

what do baby plants eat?

• bean extract - 20 beans and 50ml water - grind with mortal and pestle
• (might reduce to 5 beans and 12ml at a time)
• strain, using cheesecloth and funnel into beaker
• 1% starch solution ( at least 100mL for each 1g) - should be pretty close to clear
• CAN use blender to blend it!
• 3 test tubes
• one with 10ml starch solution ->5ml bean extract, 1drop iodine
• one with 10ml starch -> 5ml water, 1drop iodine
• one with 10ml water -> 5ml extract, 1drop iodine
• comes out (blue to white), blue, white in that order

Can use cracker lab to show this - grind up cracker, put in water, test for iodine, then have someone spit into it

7^th Grade Life Science Curriculum

Unit 1: Intro to Science, Measurement and the Human Body

Lesson 2: Scientific Thinking

Objectives:

After completing the lesson, students will be able to:

· Demonstrate the difference between an observation and an inference

· Write good procedures for completing a task

Key Questions:

· What is an observation? Inference?

· How is an observation different from an inference?

· How do you write an accurate procedure?

Overview:

Day 1: Students write procedures for making a peanut butter and jelly sandwich

Day 2: Students will use posters, cartoons, and pennies to make observations and inferences.

Day 3: Students will look at makings at an archeology site and make observations and inferences.

Day 4: Students will test their ability to distinguish the difference between an observation and inference by observing a candle and cartoons.

Time Required: 4+ class periods

Materials:

Peanut Butter, Jelly, Bread, Plate, Knife

Interesting Posters or Cartoons

Pennies

Archeology Mystery Overhead

Banana, Almond Sliver, Plate, Matches, Goggles

Procedure:

DAY 1 - Making a PB&J Sandwich

1. Introduce the need for writing procedures when doing experiments.

2. Ask students to write a detailed, step-by-step procedure for making a PB & J sandwich for someone who has never made one before.

3. Then have students take turns reading the directions as you try to follow them. Deliberately make mistakes by being naive (try to stick knife in jar before opening it, spread jam on the crusts, put entire jar of jelly on the bread while it’s still in the bag...).

4. After the routine, emphasize the importance of details and something that can be easily followed by a person without any background info.

DAY 2 – Observations vs. Inferences

1. Explain the difference between an observation and an inference. An observation is information collected through the five senses. An inference is an interpretation or explanation of an observation.

2. Show a poster with people or a cartoon on the overhead. Ask students to write a list of observations and inferences. Provide examples and discuss responses.

3. Penny Observation – Give each student a penny.

4. Ask them to make three columns on their paper. Allow students two minutes to write down as many observations as possible about a their penny. Then give them some time to share in groups of three or four the observations they made. Any observation that is new is written in the second column.

5. Then bring the class back together and ask for their observations one at a time. Write the observations on the board or overhead. Ask students to write any new observations not made by their group in the third column.

6. Different students will notice different things about their pennies and not all pennies are exactly the same. Use this opportunity to explain how different students and groups will make different observations and why it is important for scientists to share their ideas with others.

DAY 3 – Archeology Puzzle

1. This assignment is intended to be done on an overhead projector. Copy the set of foot prints onto an overhead transparency. It shows two sets of footprints, one small, one big in three areas on a sheet of paper labeled A,B, and C. The first area shows the two approaching each other. The second show the steps mixed in a circle and the third show the bigger one moving away.

2. Ask students imagine the class as a group of explores traveling through unmapped jungles of Africa. As they reach a clearing, they spot a series of markings on a large slate of rock no one has ever seen before.

3. Slowly reveal one section at a time on an overhead. For each section, have students write 3 observations and 3 inferences. Pause to allow time to write and discuss answers at each step. Correct any mistakes made by students.

4. After the entire page is revealed, ask students to make an inference about the entire picture. Common answers are (a predator eating a prey, line of ants meeting, parent picking up a kid)

DAY 4 – Quiz

1. In secret, make a "candle" out of a straight section of a banana and put an almond sliver at the top at the wick. Because of the oils in the almond, it will light with a match and burn it for about 20 seconds. A banana prepared ahead of time on a plate ahead of time works nicely.

2. Prepare the students for a quiz and ask them to write down as many observations as possible without talking. Emphasize that only OBSERVATIONS are to be written down, not inferences. Any inferences written will cause a failing grade. Then SLOWLY pull out the candle, pull out matches, put on goggles, light the match, light the “candle”, and blow it out. Purposely pause at each step to allow students to write. Then for the last step, making sure everyone is watching, bite off the top part of the candle and chew. Usually this elicits a reaction from the class. By this time, most students have written down candle in at least one of their observations. You can then tell them that by writing candle any where on their paper other than the title means that they made an inference. Allow the students a chance to correct their mistakes.

3. On the other side of the paper, you can give a real quiz (true/false) by stating observations and inferences about the series of cartoons. The page of cartoons can be copied on to a transparency and projected from an overhead projector. For example, statements for the first picture could include “the person has something behind him” (observation) and “the man is pulling a heavy box” (inference).

Homework:

DAY 1: Write a procedure for brushing your teeth.

DAY 2: Write 10 observations and 10 inferences about the school.

DAY 3: Using both your observations and your inferences, write a story about what led to the markings.

OUSD Science Content Standards (State of California Science Content Standards):

Investigation and Experimentation: 1a, 1c, 1d, 1e (equivalent to Calif. State Standards 7.7a, 7.7c, 7.7d, 7.7e)

References:

Prentice Hall: Science Explorer Focus on Life Science

Think Like a Scientist p. 758-759, p. 376, unit 2 resources

Archeology Mystery

Observation vs. Inference Quiz

Why Mitochondria?

Why is mitochondria important for the cell? After this activity, you will have a better idea!

Procedure:

1. For this activity, we will be doing hand presses. A hand press is: opening one hand all the way, fingers spread as far apart as they can go, and closing the hand all the way into a tight fist. ONE hand press is open all the way, closed all the way.
2. See how many hand presses you can do in one minute. We will be doing this 5 times for one minute each. As soon as I say STOP, write down the number of hand presses you did for that round.
3. Start your counting over at zero, and do it again!
4. Make sure to record your data in the chart below.

TRIAL #	1	2	3	4	5
# of Hand Presses

What's going on?
Mitochondria uses materials in the cell to make energy for the cell. Mitochondria makes a lot of energy (and carbon dioxide is released too!), but it needs oxygen to do so. When there is lack of oxygen, like during the hand presses or exercise, the mitochondria can no longer do its job. The cell can still make energy though, outside of the mitochondria. However, instead of releasing energy AND carbon dioxide, it releases energy AND lactic acid. The buildup of lactic acid is what causes the pain after lots of exercise. Without mitochondria, we would ALWAYS feel that burn!

Thursday, July 5

ANNOUNCMENTS:

• Iron science teacher and Mix It And Eat It from 12-2
• Monday 10am-2pm STAFF STORE SALE
• Monday 1230-130pm first day faire
• Monday 2-3 Newbie boxes ----> Class starts at 3pm
• Friday, July 13 is credit sign up (need check or credit card)

Life inside a cell video

Photosynthesis Experiment:

• Can't leave bromolthymal blue, will turn green! Have to make it fresh each time you want to use it.
• when doing this experiment, fill test tubes to the top!
• Our tubes all ended up blue - Maybe CO2 diffused out into air pocket from the original yellow.
  
• Only difference between all 4 tubes was tubes with plants had bulge on parafilm cover.
• have plant fill the tube for better results

Green Onion Experiment

• Don't forget controls! + and - controls!
• 
  

Class Notes for Monday, July 2, 2007

cell membrane differences activity:

• tennis ball can cut into 3 sections
• mixture with sand, salt, marbles, bb's
• give 3 filters - strawberry basket, window screen, filter paper, etc. Ask them how they can assemble a device that will separate each type

Making Your Own Indicator Solution:

• 3 mL bromolthymol blue and fill with tap water to make 250 mL of solution
• take a plastic cup and add about 2 inches of solution. Use straw and white piece of paper. Blow into liquid until you see something happening!
• what is happening? air? co2?
• can turn back to blue if you put air in it!
• blue is about 7.2 pH
• 7 is green
• 6.8 and below is yellow
• if you used distilled water, it will START as yellow. pH of distilled water is about 5.0, because the way distilled water is made, it is exposed to a lot of air and so CO2 will diffuse in
• when you make the solution, watch out because each tap can produce water of different pHs... even in the same building!
• when turns yellow, to turn BACk to blue, just use a few specks of baking soda.
• NaHCO3 = sodium bicarbonate = baking soda

NaHCO3 -> Na+ + HCO3
HCO3- + H+ <-> H2CO3<->H2O+CO2

PHOTOSYNTHESIS

6CO2 + 6H2O + E <--> C6H12O6+6O2

Can use water snails and elodea to make experiments, however only with brom. blue, Phenol red is TOXIC! and must add tap water conditioner to negate cloramine for snails.

4 test tubes - all 4 with blue in it. 2 are breathed into to turn yellow. In one of the yellow, place elodea - the other remains empty for control. in one blue, place another plant - the other blue is the 2nd control.

Respiration - "Feel The Burn"

• Hand Sprints - all the way open, all the way closed.
• count how many you do for 20 seconds, go again!
• arms feel hot, out of breath, etc. Oxygen stops going to arm muscles, so to get energy, have to do lactic acid fermentation (why you feel burn) BUT doesn't produce as much energy as cellular respiration with O2
• cellular pH actually does decrease! acid denatures proteins
• cellular respiration happens in mitochondria. Once no more oxygen, mito shut down, basically are not working anymore. Anerobic (without oxygen) happens in the cytoplasm of the cell
  

teaching box ideas

ideas:
have each group responsible for one organelle. They read a paragraph on it, and fill out the graphic organizer.

misconception: use as warm up at beginning of unit
cell vs molecule (same size?)
big animal vs. small animal (same size cells or not?)

ASSESSMENTS!!!!??!!

Cell Circus -

look at ripe and unripe bananas. What is the difference with Iodine stain? Why?
(starch turns to sugar. Iodine is a starch detector!)

Friday Lesson Demos

Eric Muller:

expose tip of straw, rub wrapper on straw, straw will stick to wall!!

now (use new straw) do the same thing, hold gently next to person next to you. They will repel! Use one wrapper one straw will attract!

Kelly:side viewfront view

From Invitations to Science Inquiry, by Tik Liem

1. take red (bigger straw) flatten one end
2. cut at angle (see 2 views)
   
3. blow into end that is pointed while slightly opening and closing mouth. straw will hum!
4. as you cut the straw shorter, it will get higher pitch!

Eugene:
one circle has one dot, one reigon
2 dots, one line, 2 reigons
3 dots, 3 lines, 4 reigons
4 dots, 6 lines, 8 reigons
5 dots, 10 lines, 16 lines
6 dots, 15 lines, 31 reigons!!! (maybe 30)

Need to develop skepticism - why you need to question things! Just because they look like they are working, still need to prove things and shown for sure.

Paul:
black box - show them different things leaving, then pair them up to ask them how it happened. then groups of 4 then whole class to talk about it.

Katie:

tape page 4 to page 1
then page 2 to page 3
copy double sided on 11x17 paper

charged 4 two copies instead of 4!

Karen: taste depends on smell

Let's MAKE A CELL!!

This activity will help the students solidify their knowledge in parts of a cell, and what each part does and looks like (roughly).

Materials - Deck of Cards, pictures of organelles, descriptions of organelles

Procedure - TO make the deck: Decide which organelles to use. Here is a list of some:
Lysosome
Ribosome
ER
Golgi body

mitochondria
chloroplast
cell wall
cell membrane
nucleus
chromosome

There should be enough students to make 4 cells, so not all cards may be distributed. Since each organelle will be represented 4 times (except chloroplast, cell wall, and mitochondria will have 2 each), they can be diverse - maybe 2 pictures of the organelle and 2 written descriptions

Each nucleus should be directed to a separate corner of the room. The class needs to then make a cell by organizing themselves according to their cards. Each cell should have only one of each organelle (even though real cells have multiples!) There should be two things to look out for - one cell cannot have BOTH the picture AND description of the same organelle, AND the two plant cells should have no mitochondria and the animal cell should not have cell wall or chloroplasts. Maybe to distinguish the nucleus should say Animal or Plant. Or, instruct the chloroplasts and mitochondria to go to the corners instead of the nuclei.

I heart Science

This is where I am going to publish notes from class, and ideas for activities. I would LOVE comments on ideas for activities or improvements.
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Wednesday, 6/27/07

	Like a cell	Not like a cell
soup	3D Membrane Water based Contains nutrients Stored chemical energy	Membrane not permeable No reproduce Not alive Can’t be building block Veges=organelles
Image	Semipermiable Stores info Made of cells List of organelles Contains energy	2D Cell is not really colorful No metabolism No move
Bag of stuff	Batteries -> mitochondria Bags -> membrane Balloon=er Syringe Thermometer	Not living Not enough
Chicken eggs Flowers

Can use at the beginning to see what they know about cells already.

NAKED EGGS

2 days in vinegar, change each day

Controls?

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6/28/07

Thursday

Osmosis tube-

Relative height doesn’t matter. One tube can be higher up than the other. Food coloring in one side helps to see osmosis.

Moving because of difference in concentration of THINGS that are DISSOLVED (solute)

Better to use two things that are very different – corn syrup and water for example

Water is on both sides. But side with water has MORE water, LESS dissolved stuff. Corn syrup side has LESS water and MORE solute. So where is the water going to move towards the MORE solute

Good to do right before eggs. Set up osmosis tube then go to eggs then come back at the end of the period.

ANOTHER EXAMPLE – raisins in salt water and regular water. In regular water they swell, what do they do in salt? NOT Shrink! Potato, onion, etc will shrink in salt water but raisin still plumps up!

LOOKING AT EGGSPERIMENT

EGG	Observation	Mass	Volume	Circumference
70% alcohol	Looks like shell again	22% less	22% less
99% alcohol	Same AND very much like hard boiled – yolk is not as cooked	33%less	34% less
Baking Soda	Not much different	18% less	11% less

Salt solutions don’t work – has to be actually buried in salt to work

egg in milk GAINS water

corn syrup makes egg DECREASE water and makes it wrinkled

MUMMIES - can mummify anything with just baking soda. Water is important for life!

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