Activities

Build a 1–100 chart and circle every multiple of 7 — patterns appear instantly.

How long would it really take? Estimate, then watch the seconds add up.

Spot multiplication in tiles, eggs, fingers — count the rows × columns.

Share cookies, split a pizza — division is just sharing fairly.

Pair things up. Anything left over? It's odd. Nothing? It's even.

Pick a starting number and a rule — let the sequence run wild.

Three big laws of arithmetic — try to break them with examples.

Skip-count around a circle and watch a star appear.

Count to 31 on one hand — meet binary in your bones.

Sixteen-step beats — base 16 you can dance to.

Open any data set — way more 1s than 9s. Benford's strange law in action.

1, 1+3, 1+3+5… every odd-number sum is a perfect square.

Sieve of Eratosthenes by hand — cross out, watch primes survive.

Roll one die many times — the bar chart fills like magic.

Two dice this time — see why 7 wins and 2 is rare.

Flip a coin 100 times. Roughly fifty-fifty — but never exactly.

Stand by a road, tally colours — your first real survey.

How full is the lot? Count, estimate, fraction it.

Survey friends, plot a pictograph, pick the winner.

Pick 30 leaves, measure each, build your first histogram.

Real headlines — what does the chart actually say?

A good survey starts with a sharp question.

"Do you like it?" → "How often do you do it?" Better data follows.

Pick your sample, log clean rows, avoid the classic traps.

Two random dice — sum vs product. Different shapes, every time.

A clever calendar trick — Zeller's congruence, simplified.

Mean, median, mode — same five numbers, three answers.

Sweets in a jar, beans in a bowl — guess close, score points.

Two categories, one chart — compare boys vs girls, before vs after.

Line up sticks, ribbons, shoes — longer, shorter, same.

Measure with hands, feet, then a ruler — meet the metre.

Pour water between jars — estimate first, then measure.

Hold, weigh, compare — grams to kilograms in your kitchen.

Your own foot, hand-span, pace — measure the room your way.

Where do the hands meet at 4:00? Geometry inside time.

Find a cube, a sphere, a cylinder in your house — count the faces.

Pace it out, sketch it, calculate — landscaping math.

Draw a deck to scale — areas, edges, cost per board.

How long should the line be? Trigonometry by the lake.

Thumb-trick triangulation — guess distance to a tree from your window.

Sides, corners, curves — sort a pile by any rule you pick.

Fold paper shapes — some halves match perfectly, some don't.

Fold, cut, unfold — make snowflakes that prove symmetry.

Rotational symmetry by hand — perfectly balanced, every time.

Why are the outer lanes staggered? Circumference, with stakes.

Any map needs only four colors — try to break it.

Toss a coin onto squares — does it land cleanly inside? Geometric probability.

Twelve five-square shapes — fit them all into one rectangle.

Plant in rows or a circle — which packs more?

Connect dots to make squares — count tilted ones too.

Plot points, connect dots — a T-Rex appears on the grid.

More coordinates, longer neck — gentle giant on graph paper.

Plot, plot, plot — and a face from another world stares back.

Tell two friends, who tell two… how fast does a secret spread?

Drop needles on lined paper — and stumble onto π.

How many ways can you pick from {a, b, c, d}? Powers of two.

Cross every bridge once — Euler proved you can't. See why.

Same volume, less metal — what shape minimises the can?

Sunflowers, shells, shadows — find the curves around you.

Lost without a compass? Math your way back to camp.

Trickier terrain — vectors and bearings carry you home.

Two close notes wobble together — interference you can hear.

A row of (x, y) — guess the rule, then check it.

Walk, sit, run — graph distance vs time as you live it.

Read a curve like a story — fast bits, slow bits, turns.

Three pairs of shoes, one right triangle — measure and check a² + b² = c².

Measure circumference, divide by diameter — π appears.

Trace a swinging weight onto rolling paper — and there's a sine wave.

Measure a tree's height without climbing — angles do the work.

Sort, stack, total — coins are arithmetic you can stack.

Area × cost per metre — your first quote.

Same number, different units — convert and compare.

Follow the recipe — and meet your first ratio.

Double it, halve it, scale to 30 — keep the ratio.