The same number, several representations

Half of a slash can be written as 1/2, 0,5 or 50%. Rationals are numbers that can be written as a/b, with a and b integers and b ≠ 0. They include negatives, zeros and positives. Every integer is also rational: 3 = 3/1.

Choose your track

Trail What to explore First step
🌱 Elementary I · 1st to 5th year Equal parts, fractions and decimals Share and discover
🚀 Elementary II · 6th to 9th grade Operations, percentages, proportions and algebra Connect ideas
🎓 High School · 1st to 3rd grade Powers, roots and models with restrictions Deep deeper

The levels suggest a reading path. Come back to review when you need to. In each meeting, observe a situation, represent it with a drawing or calculation, explain the strategy and check the challenge.