Estimation 180
Estimation 180 is a free website that gives a fun and free way to start a maths lesson. Students estimate various things, giving even disengaged students an easy win while practising maths skills.
How It Works
Estimation 180 shows students a picture and asks them to estimate things like height, amounts, or quantities. They compare guesses to the real answer, practising number sense and estimation in a quick, engaging way.
For Example:
Show your class a picture of Mr. Stadel and ask them to estimate how tall he is. Students put up their guesses, then reveal the correct number. Spark a discussion: did anyone use multiples, comparisons, or other clever strategies? It’s a quick, fun way to get students thinking about estimation and number sense.
Why It's So Good
• Engages the whole class from the start of the lesson
• Low barrier for entry, so even disengaged students can participate
• Builds number sense, estimation skills, and reasoning
• Encourages discussion about strategies, not just correct answers
• Works with any age or ability level
• Can be used daily as a warm-up without getting repetitive
Just a few minutes of Estimation 180 can boost engagement and number sense, making maths warm-ups quick, fun, and effective. Give this activity a spin with your class and tell us about the experience!
