One of my favorite classroom tools are the data probes from Vernier Technologies. During our 5th grade unit study of motion, we used the Go! Motion sensor to detect student motion including speed and velocity.
You can see the level of concentration in my students' faces as they collected their data using laptops and probes. In addition to collecting the data, students developed an understanding of how speed can be represented on a line graph.
I highly recommend the use of data probes such as these. Grant sources such as DonorsChoose and Bright Ideas are great places to secure funding.
After completing this investigation, we analyzed various line graphs representing speed. Check out our notebook entries.