Count · rearrange · try

Mathematics workshop

Count, solve problems, build shapes and find patterns. Each topic has theory, practice and games. Start with something familiar.

Start with quantities

Choose a topic

Amounts, numbers and operations

The main route: from counters to understanding calculations and story problems. Larger ranges remain available in the settings.

1 2 3

Digits and quantities

Count objects. Rearrange them and check whether the amount stays the same.

0 → 20

Numbers in order

Neighbours, positions and steps along a number line.

< = >

More, less and equal

Compare two collections: make pairs or inspect the pans.

2 + 3

Number composition

Split a number into two, three or more addends. Find a different split or a hidden part.

Addition

Join two parts to make a whole. Connect the objects with an equation.

−

Subtraction

Take a part away from a whole. See what remains and check by adding.

10 + 1

Tens and ones

Make one ten from ten ones. Then explore hundreds and thousands.

? → =

Picture problems

What was there, what changed and what do we need to find? Build the story and its equation.

10 +

Useful calculation strategies

Count on, make ten and exchange ones for tens.

Shape, measurement and rules

Explore these alongside counting. You do not need to finish all arithmetic first.

△ □

Shapes and space

Recognise shapes, rotate pieces, move on a grid and measure a boundary.

0 ├┤

Measuring and comparing

Equal units, rulers, time and money in clear diagrams.

● △ ●

Patterns, rules and data

Find the repeating unit, sort objects and read a small table.

Next steps: groups and shares

After addition, subtraction and number composition, explore equal groups and parts of a whole.

Multiplication

A later step: equal groups and a short way to write their sum.

Division

A later step: share a whole equally and check every group.

Parts and fractions

A later step: equal parts of one whole and how to write a chosen fraction.

Arithmetic trainer

Choose operations and set up your tasks. Solve an example, then check. Ask for a hint if you need one.

Open the trainer

For grown-ups

Start with amounts and numbers through 10, then 20. Explore shapes, measurement and patterns alongside counting. Multiplication, division and fractions come later. Choose tasks by the child's skills rather than just the largest number. Session results are not saved.