Today in class we did two major science experiments.
In the first experiment the students used devices called "RANGER" that use sound waves to determine distance, like a bat would (or a dolphin under the water - sonar). They had to move to produce a time/distance graph, by measure their distance from a wall.
It was the first time they used the equipment, so a new and confusing experience.
On Tuesday and Thursday we meet for 95 minutes. So we had a second major activity.
We collected data for future use. This time we used wooden cars and ramps with electronic photogates (light beam switches/sensors). We timed the car over 3 distances, three times at every distance. This activity we had enough equipment to allow one at every table. When we learn how to calculate speed and acceleration, we'll be able to use the data we collected.