Wednesday, April 8, 2009

Balloon Car - Race Day

videoThe following video is Race Day for the balloon cars that both of my grade 10 Academic classes created. Included with each of the videos is the URL of their blog that they were asked to create to document the progress of design a balloon powered car. Those that do not have a URL, unfortunately, did not keep their blogs updated. Feel free to use their ideas to help make your own balloon car go FASTER or FURTHER. Good luck. Mr.P

Monday, March 9, 2009

Distance vs. Time Graphs - 18:32

video

KEY CONCEPT: Find the slope of the best fit line on a distance time graph to find the average speed.

Tuesday, February 3, 2009

Speed and Acceleration Equations - 5:08

video

KEY CONCEPTS:

These pyramids need to be memorized. Simple way to remember the equations for speed and acceleration

Sunday, February 1, 2009

Significant Digits

video

Key Concepts:
Be careful with zeros. Zeros in between non-zero numbers are significant. Zeros after the decimal are significant ONLY IF they FOLLOW any OTHER number.

Examples:

a.) 4000000 - has 1 significant digit (the zeros are there as place values showing size of the number)

b.) 95.00 - has 4 significant digits (we DON'T need those zeros because without them the value remains the same, HOWEVER, by us including those zeros we MAKE THEM SIGNIFICANT)

c.) 0.00003 - has 1 significant digit (zeros in front of the three are only there as place values. Without them the value of the number changes)