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