Number Planet for School Maths Lab

Quick Answer: Number Planet is a primary maths manipulative generally sold as a convertible kit that can be set up as a number balance, a pan balance or a counting abacus. Classes use the Number Planet to explore equality, addition and subtraction, comparison of quantities and place value.

Equality Children Can See Balance

Many children read the equals sign as ‘the answer comes next’, which causes trouble later with number sentences such as 8 = 3 + ? or 3 + 5 = 4 + ?. A number balance corrects that idea. A weight hung on 3 and another on 5 on one arm balance a single weight on 8 on the other arm, so the equals sign reads as ‘has the same value as’. Children then find missing numbers by adding weights until the beam levels, which is an early step toward solving equations.

Set up as a pan balance, the same kind of kit compares quantities directly: which pan is heavier, and how many more counters are needed to make both sides equal. Set up as an abacus, with beads on spikes or rods, it supports counting, grouping in tens and place value. Moving between these modes lets one kit serve several lessons across the early primary years.

Because the listing gives only the product name, the modes, beads, weights and other parts supplied should be confirmed before ordering.

Specifications

Applications

• Showing equality with a number balance, such as 3 + 5 balancing 8
• Finding missing numbers in number sentences by balancing
• Comparing quantities with a pan balance
• Counting and building place value on an abacus set-up

Care & Handling

• Assemble the Number Planet on a level table so the balance settles true before an activity starts.
• Keep weights, beads and connectors in a sorted container; a missing weight spoils balance activities.
• Small parts are not suitable for children who still put objects in their mouths.

Why Choose LabEquip

Primary teachers who want one kit to cover equality, comparison and counting often choose a convertible set like this, while schools wanting a dedicated balance can compare the Dish Balance with Weighted Numbers. LabEquip lists both in its Mathematics School Lab Products range; confirm the parts supplied through the LabEquip contact page.

Frequently Asked Questions

How does a number balance teach the equals sign?

Weights on 3 and 5 on one arm balance a single weight on 8 on the other, so the beam levels when both sides have the same value. Children learn that the equals sign means has the same value as, not the answer comes next.

How are missing-number problems solved on a balance?

Set up the known side, such as a weight on 9, then place a weight on 4 on the other arm and try numbers until the beam levels. The weight that balances is the missing number, showing that 4 + 5 = 9.

What is the difference between a number balance and a pan balance?

A number balance has pegs at numbered positions, so the position of a weight shows its value. A pan balance compares actual quantities, such as counters or objects, placed in two pans.

How is the abacus mode used?

Beads on the rods or spikes stand for ones, tens and hundreds by position. Children count beads, exchange ten beads on one rod for one bead on the next, and read numbers from the rods, which builds place value.

Which age group uses the Number Planet?

It suits early and lower-primary children learning to count, add, subtract and understand equality. Older children who find the equals sign confusing in equations can also benefit from balance activities.

Why use one kit for several activities?

A convertible kit gives balance, comparison and counting work from one set of parts, which saves storage and lets children see links between the activities, such as counting beads and then balancing the same numbers.

Last Updated: September 2026