Pre-Kinder

2, 4, 6, 8 — pick a step and watch a marker hop along.

1, 2, 3 — tap to count, hear the rhythm, watch the blocks stack up.

1 to 100 in a 10×10 grid. Click cells to colour them and spot patterns.

What's the difference between a number, a numeral, and a digit?

Break 47 into 4 tens + 7 ones — and put it back together.

Why 305 isn't the same as 350 — see digits move between columns.

Drag a marker and see negatives, fractions and decimals come alive.

Three (3), third (3rd), bus #3 — same digits, different jobs.

I, V, X, L, C, D, M — type a year and watch it become a Roman numeral.

How many days in this month? When does the leap year fall?

Why every fourth year — except some — gets an extra day.

Read clocks, count minutes, work with durations.

Twelve months, names and origins — and how many days each one has.

Seven days, where the names come from, and how the modern week was set.

Sunrise to sunrise — and the 24 hours in between.

One trip around the sun — and why it's not exactly 365 days.

Spring, summer, autumn, winter — and the tilt of the Earth that drives them.

Seconds, minutes, hours, days — convert between any two.

Measuring elapsed time — for races, recipes and physics experiments.

Two ways to display the same time — read either at a glance.

What comes next? Numbers, colors, shapes — the first step into algebra.

1, 4, 9, 16… spot the pattern, predict the next.

≠, ≈, ∝, ∞ — every symbol an algebra student needs.

Slices of a circle — each one a percentage of the whole.

Bar, pie, line — the same numbers told three ways.

Compare categories at a glance — taller bar means bigger.

Connect points to track change over time.

Pictures stand in for counts — friendly charts for small data.

Bar charts for grouped numerical data — bins on the x-axis.

One dot per data point — see exactly where each value lands.

The fastest way to count by hand — strokes in groups of five.

How often each value (or range) appears — turn a list into a table.

Running total — and the curve it builds.

Two variables, one dot per data point — patterns appear.

An old-school way to see distribution without losing the actual numbers.

Design good questions, gather honest answers, analyse the results.

Mean, median, mode, range — interactive.

Add them all, divide by how many — the everyday average.

Some data points count more — multiply, then divide by total weight.

On average, how far is each value from the mean?

The middle value when sorted — robust against outliers.