Lesson 4

THERE IS AN ERROR IN THE WORKBOOK! It says to open 4B (second progam) but that is for the acceleration lesson!

I set up the tracks and you can have the motion detectors set up at at the 5 cm mark and the carts start at 30 cm for the NEW motion detectors. This gives the students more track to work with. Helps...especially with the fans turned on. The old ones work better at 50 cm.

I made a few changes to the workbook and had the students change their copies. If you want to see my changes, email me and I'll send it to you.

I introduced the lesson after finishing lesson 3.3 today. We will start it first thing Monday. I have 4 tracks on counters and 4 on tables (that are pushed together). Wish me luck!