NumIO learning activity
Go on a subtraction safari
Subtraction Safari helps learners connect taking away with visible movement to a smaller number.
Learning goal
Find the difference and use the board to make the subtraction strategy concrete.
How to play
Read the subtraction sentence, start from the highlighted clue, and tap the number that gives the correct difference.
Classroom idea
Ask learners to describe what was taken away and whether the board move went left, up, or across a row.
Frequently asked questions
What does “Subtraction Safari” practise?
In “Subtraction Safari”, learners find the difference and use the board to make the subtraction strategy concrete.
What is the difference between practice and speed run in “Subtraction Safari”?
Practice gives five untimed questions. Speed run adds a timer that gets shorter with each correct answer, ends when wrong answers or timeouts use up three lives, and lets you post your score to this activity’s ranking with a nickname.
Is “Subtraction Safari” free, and do I need an account?
Yes, it is free and there is no account or sign-up. Practice completions and speed run bests are saved in this browser; a nickname is only needed if you choose to post a speed run score to the ranking.