Lunch box capacity

https://docs.google.com/presentation/d/12V3fndyuUHRYYK4wtbm1OuIHFX9um5T53rIzKd0Olas/edit?usp=drive_link Students sort a handful of coins. How have you sorted them? Discuss. What are the features of the coins?{...}

Use the numbers 1 to 5 and place these in the arms of the V so that they both have{...}

Oh no! A thief has stolen a number and now there is a missing number in this equation! Can you{...}