1. Standard
I can determine what causes objects to speed up, slow down  or change direction
Entry Task
Go to Pg. 45 –
Mouse trap car: Building Day 1
Learning Target
How will we build our car?
At home
Continue to get design and building ideas

2. Keep in mind…. Keep your design simple
Your grade comes from the write up
Write-up must include three tests

4. Slide on Tape on Decide on mouse trap design Test pole length
“What effect does the rod length have on the distance the car goes”

5. Tape Mouse trap on where you want it to go.
“What effect does the placement of the mouse trap have on the distance the car goes”

6. Crooked axels cause unbalanced forces!
Measure carefully –
Crooked axels cause unbalanced forces!

8. Glue straw to measured wood

9. Slide axel into straw – trim straw carefully – Not too loose, not too tight to wheel

10. Cut out section of straw
Mount wheels on axel - you may need to experiment with the straw length
(long hub on inside)

11. Measure and mount front axle and wheels

12. What effect does wheel size have on how far the car goes?

13. What effect does wheel size have on how far the car goes:

14. Make sure wheel is centered

15. Wrap tape around back axel to ensure grip for the string

17. Mount the string tie by squeezing with pliers for a firm grip

18. Materials list 1 body/frame board 4 plastic wheels 1 mousetrap
2 steel axels
1 brass pole
2 Cd’s
4 paper wheels
4 plastic wheels
Masking tape
Hot \glue
2 straws
1 string
1 Eye screw

19. Today…
Get your initial drawing and the first pages completed and checked off
Get supplies
Get to building….

20. By Wednesday…
Bring a box or bag to store your parts