← Maths with Martin

Level 1 free

Number kid

Years 1–2: addition, subtraction, clocks and shapes. 30 lessons.

1. Numbers to 10 A number tells you how many. You will learn to count things up to ten. ⏱ 12 minutes Practice
2. Numbers to 20 Numbers do not stop at ten. Eleven to twenty is ten and a bit more. ⏱ 12 minutes Practice
3. Comparing: greater, less, equals Where is there more? You will learn the signs < > = and the crocodile mouth that eats the bigger number. ⏱ 13 minutes Practice
4. The number line Numbers lined up on a line. You can see what is bigger, what is smaller and what sits next door. ⏱ 13 minutes Practice
5. Adding to 10 Plus means put together. You will learn to add numbers up to ten. ⏱ 14 minutes Practice
6. Subtracting to 10 Minus means take away. You will learn to subtract numbers up to ten. ⏱ 14 minutes Practice
7. Adding to 20 without crossing ten We add bigger numbers, like 12 + 3. The ten has a rest. Only the ones do the counting. ⏱ 13 minutes Practice
8. Crossing ten Questions like 8 + 5. First fill up to ten, then add the leftover. ⏱ 15 minutes Practice
9. Subtracting to 20 with crossing Questions like 13 − 5. First you take away to ten, then the leftover. ⏱ 15 minutes Practice
10. Splitting numbers Every number can be split into bits. Houses will show you how. ⏱ 13 minutes Practice
11. Tens and ones The number 34 = 3 tens and 4 ones. Each digit has its place and its job. ⏱ 14 minutes Practice
12. Numbers to 100 Twenty, thirty… up to a hundred. You will learn to read, write and order numbers to a hundred. ⏱ 14 minutes Practice
13. Adding whole tens 30 + 20 is the same as 3 + 2, just with packs of ten. Fast and easy. ⏱ 12 minutes Practice
14. Adding to 100 Questions like 34 + 25. Tens to tens, ones to ones. ⏱ 15 minutes Practice
15. Subtracting to 100 Questions like 57 − 23. In parts again: tens on their own, ones on their own. ⏱ 15 minutes Practice
16. How many more, how many less Comparing with a number: not only who has more, but by how many. The difference of two piles. ⏱ 14 minutes Practice
17. Zero The number for nothing. Zero can do magic: adding it changes nothing, and it holds a place in writing. ⏱ 12 minutes Practice
18. Even and odd numbers Which number splits into pairs and which does not? You will spot even and odd numbers at once. ⏱ 13 minutes Practice
19. Clocks: o’clock and half past The short hand, the long hand. You will learn to read o’clock and half past on a clock. ⏱ 14 minutes Practice
20. Clocks: quarter past, quarter to and minutes Quarter past four, quarter to five and counting minutes in fives. ⏱ 15 minutes Practice
21. Money: crowns and paying Coins and notes, paying and change. Maths that you count for real. ⏱ 15 minutes Practice
22. We measure: metre, litre, kilogram How long, how much poured, how heavy. Three units you meet every day. ⏱ 14 minutes Practice
23. Shapes: square, rectangle, triangle, circle Four basic shapes. You will learn to spot them, describe them and find them all around you. ⏱ 13 minutes Practice
24. Solids: cube, sphere, cylinder What you hold in your hand is not flat. You will spot a cube, a sphere, a cylinder and a cuboid. ⏱ 13 minutes Practice
25. A line, a straight line, a line segment Straight lines have names. You will learn to draw a line segment with a ruler and measure it. ⏱ 13 minutes Practice
26. Word problems on adding A question hidden in a story. You will learn to find it, write it and solve it. ⏱ 15 minutes Practice
27. Word problems on subtracting Stories where something is taken away or compared. You will spot minus and solve it. ⏱ 15 minutes Practice
28. Signs and writing a question How a question is written and read correctly: plus, minus, equals and order in the notebook. ⏱ 13 minutes Practice
29. Project: we play shops A big game of seller and customer. Prices, paying, change — everything at once. ⏱ 16 minutes Practice
30. Number kid finale A big recap of the whole level. Go through every event and earn the Number kid title. ⏱ 16 minutes Practice

Coding is still on the home page — this course does not replace it.