Math

ladybugs

Counting & number sense

Count, compare and group objects with confidence.

3 min · +80 XP

blocks

Place value

Ones, tens and hundreds: where a digit's value comes from.

4 min · +90 XP

frog

Addition & subtraction

Move along the number line to add and take away.

4 min · +90 XP

chocolate_grid

Multiplication

Rows and columns: see multiplication as a grid.

4 min · +100 XP

cookies

Division & sharing

Share fairly: division as giving everyone the same.

4 min · +100 XP

pizza

Fractions

Equal parts of a whole: the pizza, the chocolate bar.

5 min · +150 XP

elevator

Negative numbers

Above and below zero: the elevator and the thermometer.

4 min · +110 XP

sale_tags

Percentages & decimals

Discounts and prices: a percent is a fraction of 100.

5 min · +120 XP

coins

Decimals

Add, subtract and compare decimals.

5 min · +120 XP

ruler

Rounding

Round to the nearest ten or hundred.

5 min · +110 XP

garden

Perimeter & area

Fence the garden: measure the border and the surface.

5 min · +130 XP

treasure_map

Coordinates

Find the treasure: points on a map grid.

5 min · +130 XP

rocket

Powers & roots

Powers, square roots and scientific notation.

5 min · +120 XP

dominos

Sequences & patterns

Find the rule and continue the sequence.

5 min · +120 XP

clock

Angles

Measure, compare and add angles.

5 min · +120 XP

aquarium

Volumes

Fill solid shapes and compute their volume.

5 min · +130 XP

butterfly

Symmetry

Find axes of symmetry in shapes.

5 min · +120 XP

kaleidoscope

Transformations

Translate, rotate and reflect shapes.

5 min · +120 XP

lego_blocks

Algebraic expressions

Simplify and expand expressions.

5 min · +140 XP

balance_scale

Linear equations

Keep the balance and solve for x.

5 min · +140 XP

recipe

Proportions

Scale recipes and compare ratios.

5 min · +130 XP

ladder

Pythagoras theorem

Find the missing side of a right triangle.

5 min · +140 XP

shadow

Thales theorem

Use parallel lines to find lengths.

5 min · +140 XP

charts

Statistics

Mean, median, mode and range.

5 min · +130 XP

spinner

Probability

Predict the chances of an event.

5 min · +130 XP

palette

Ratios

Share an amount in a given ratio.

5 min · +130 XP

machine

Functions

A function is a machine: one input, one output.

5 min · +150 XP

slope

Linear & affine functions

Slopes, intercepts and graphs.

5 min · +150 XP

scale

Inequalities

Solve and read interval solutions.

5 min · +140 XP

crossroads

Systems of equations

Find the point where two lines meet.

5 min · +150 XP

price_tag

Reverse percentages

Find the original price after a discount.

5 min · +150 XP

parabola

Quadratic functions

Parabolas, roots and the vertex.

5 min · +160 XP

unit_circle

Trigonometry

Sine, cosine and tangent on the unit circle.

5 min · +160 XP

arrows

Vectors

Coordinates, sums and lengths of vectors.

5 min · +160 XP

spread

Advanced statistics

Quartiles and spread of a data set.

5 min · +150 XP

staircase

Advanced sequences

Find the nth term of a sequence.

5 min · +150 XP

rocket

Exponential growth

Powers that grow fast: 2, 4, 8, 16…

5 min · +160 XP

dice

Compound probability

Two events in a row.

5 min · +150 XP

machine

Composite functions

Feed one function into another.

5 min · +160 XP

tangent

Derivatives

The slope of a curve at a point.

5 min · +170 XP

earthquake

Logarithms

Undo powers with logarithms.

5 min · +170 XP

arrows

Vector dot product

Multiply two vectors to get a number.

5 min · +170 XP

tangent

Derivative applications

Use derivatives to find slopes and extrema.

5 min · +170 XP