Additional Resources
Four Pan Algebra Balance
#267545W
Grades: 5-12
$44.95
Unlike any other balance, this one makes it possible to physically show that -1 is less than 0!
Weights placed in the outer pans represent negative integers and those placed in the inner pans represent positive integers.
When you place a weight in each pan on one side of the center post, the balance remains level as (-1) + (+1) = 0. Great for small-group work, the balance comes with two plastic pans, four plastic canisters, a set of plastic weights, and a teacher's booklet.
Some assembly required.
Weights placed in the outer pans represent negative integers and those placed in the inner pans represent positive integers.
When you place a weight in each pan on one side of the center post, the balance remains level as (-1) + (+1) = 0. Great for small-group work, the balance comes with two plastic pans, four plastic canisters, a set of plastic weights, and a teacher's booklet.
Some assembly required.
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