SCALES & BALANCE

Use this unique balance to physically show the sum of an integer and its additive inverse is zero.

Unlike any other balance, this one makes it possible to physically show that –1<0. Weights placed on the outer pans represent negative integers and those placed on the inner pans represent positive integers.

When you place a weight in each pan on one side of the centre post, the balance remains level as (–1)+(+1)=0. Great for small group work, the balance comes with four plastic pans, four plastic canisters, a set of plastic weights and a Teacher’s Booklet. Some assembly required

Explore basic measurement concepts with this durable balance

Perfect for measuring and comparing up to 2kg in the 1,000ml (1 litre) pans.

Made of durable plastic with sliding compensators for zero adjustment. Includes five each of 5g and 10g plastic stacking weights. Balance measures 61cm x 35.5cm.

Ages 5-11

This premium balance, crafted from durable high-impact plastic, boasts an integrated weight case with a secure lid. It comes with 10 brass weights, 5cm-deep detachable pans, a precision zero-adjustment knob, and a damping button.

The balance can support up to 2,000g, delivering accuracy within +/- 0.5g. Its dimensions are a compact 30cm x 15cm, making it ideal for ages 8 to 12.