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Ward's® Gravity and Orbits Lab Activity

Avg. Ratings: 2.0 (3 Reviews)
Enough Materials to Construct Five Sets of Two Models

  • Includes a teacher's guide
Students investigate the effect of gravity on a moving body, then determine the relationship between a celestial object’s period of revolution and the force pulling on the object, by constructing two simple models in a two-part lab activity. You will receive enough materials for five setups, a teacher’s guide, and student copymasters.



Item # Description No. of Lab Groups Unit Availability Price Quantity
470015-222 Ward's® Gravity and Orbits Lab Activity
5 Each Retrieving


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Total Ratings: 3
Avg. Ratings: 2.0 out of 5

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Was this review helpful? Yes No
Yes: 0 No: 0 user Education / Teacher / California
Yes, I recommend
This does the job and is popular. Yes, the plastic tubing cracked, but we put tape on it. We haven't had a eyelet come out or a knot untie. We used Boyscout knots. It is good for once a year use. Note: we use it in 5th grade in small groups of no more than 10. Students get to take it off the shelf for use during work periods. We are a Montessori school, so the students are used to being careful with materials. They don't overuse it. We also use a really good timer that works in the tenths of a second.
Reply associate Published 06/28/2017
Thank you!
Was this review helpful? Yes No
Yes: 4 No: 0 
Drew Wisconsin
No, I didn't recommend
poor quality materials - This lab set has good curriculum matched with cheap materials. I used the orbiting devices in my middle school Earth Science classes. After two sections of students, half of the devices had broke. The design is of poor quality largely from the cheap materials. The styrofoam balls are cheap and need to be much more dense and the screw eyes are too short. After very little use (my students were
Was this review helpful? Yes No
Yes: 4 No: 0 
Drew Wisconsin
No, I didn't recommend
Poor quality materials - Product arrived four months late. The styrofoam balls are not dense enough to hold the screw in eyelets. The nylon string is too thick and does not stay in a knot, even when tightened with pliers. The plastic tube that holds the washers is flimsy and tears easily. After two sections of middle schoolers using the product, half of the devices had broke and needed repair. The concept and curricu
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