Maths thinking game · Grades 1–10
Number Line Launch: Free Number Line Game for Kids
Number Line Launch is a free maths game that builds number sense. Aim the cannon, fire and land the ball right on the spot where a number lives on the number line. Younger children can also play Race to 100, a two-player counting board game.
Part of our 24 brain games for kids, free with an account.
What Number Line Launch trains
Number Line Launch trains number-line estimation: judging how big a number is by placing it between two end points. A clear “mental number line” underpins adding, rounding, measuring and fractions, and how accurately children place numbers on a line is linked to their wider maths achievement (Schneider et al., 2018).
What the research says: Placing numbers on a line is a well-studied maths skill: in one study, four 15-minute sessions of a linear number board game closed the gap in number-line estimation between preschoolers from lower- and higher-income families (Siegler & Ramani, 2008).
Who Number Line Launch is for
Number Line Launch suits Grades 1–10. Starter uses 0–10 with every mark shown; Explorer 0–100 in tens; Challenger numbers to 1000 plus simple fractions; Expert adds decimals, mixed numbers and negatives on lines that change every turn. Special turns (Name the spot, Work it out, Windy and Fog) stretch the same skill in new ways. Race to 100 is best for ages 4 to 7.
How to play Number Line Launch
- Read the target number.
- Aim the cannon at the spot where you think it belongs on the line.
- Fire and see how close you landed.
- Watch for special turns like Windy (aim off to allow for the wind) and Fog.
- Finish 10 turns and try to beat your score.
Tips for parents and teachers
Ask “How did you decide?” Good answers use landmarks: “7 is a bit past the middle.” Once the ticks feel easy, turn on Fewer marks; placing a number with only the end points shown is the real test of the mental number line. One round (10 turns, about 3 minutes) a few times a week is plenty. In Race to 100, have young children say every number aloud as the counter moves.
FAQs
What age is Number Line Launch for?
Grades 1–10, roughly ages 6 to 16, plus Race to 100 for ages 4 to 7.
Why are number lines important?
A strong mental number line helps with adding, rounding, measuring and fractions. Children’s number-line estimates are linked to their wider maths achievement (Schneider et al., 2018).
What is Race to 100?
A two-player board game on a straight, numbered track. Young children who played a numbered board game like this for about an hour in total improved their counting and number-line estimates (Ramani & Siegler, 2008).
Does it cover fractions and decimals?
Yes. Challenger adds simple fractions, and Expert adds decimals, mixed numbers and negative numbers.