Math

Simple articles about numbers, operations, fractions, geometry and measuring, and interactive activities: counting, the number line, times tables, division, money, the ruler, symmetry and angles.

📖 Read and learn 35
🔢 Numbers 7
➕ Arithmetic and fractions 7
📐 Shapes and geometry 5
📏 Measuring, money and time 4

📖 Read and learn

🔢 Numbers

$An old bone carved with tally marks in groups of five, and pebbles for counting$ The story of numbersThousands of years ago people had no written numbers. A shepherd counted his sheep with…
$A big zero in a circle, a countdown 3 2 1 0 and a rocket$ Zero: the amazing numberZero means “nothing”, and yet it's one of the most important inventions in the history…
$The digits 0 to 9 in their Maghreb form (our “Arabic” numerals) above the digits ٠ to ٩ in their Eastern form$ Arabic and Eastern Arabic numeralsIn the Maghreb (North Africa) numbers are written like this: 0123, and in the Mashriq…
$A hundred flat, three ten rods and four one cubes make the number 134$ Place value: ones, tens and hundredsIn the number 333 there are three identical digits, but they have different values: the…
$Six dots in three pairs (an even number), and seven dots with one left over (an odd number)$ Even and odd numbersIf the pupils in a class line up in twos, is anyone left on their own? If nobody is, the…
$A sky full of stars with the number one million in the middle: 1,000,000$ Big numbers: thousand, million and billionHow many grains of sand on the beach? How many stars in the sky? How many people on…
$A thermometer dropping below zero, and a number line from −5 to 5$ Negative numbers: below zeroIn winter the weather presenter might say: “Tonight it will be minus five.” How can…
$Twelve squares arranged as a rectangle of 3 rows, and seven squares that only fit in a single row$ Prime numbersTry arranging 12 cubes into a rectangle: you can make 3 rows of 4, or 2 rows of 6. But 7…
$A clock with Roman numerals from I to XII$ How did the Romans write numbers?On some old clocks and for book chapter numbers we see letters instead of digits: I, V…

➕ Operations and fractions

📐 Shapes and geometry

📏 Measuring

🌻 Math all around us

🔢 Numbers

➕ Arithmetic and fractions

📐 Shapes and geometry

📏 Measuring, money and time