Here is a bar model example for “before and after” type of word problems.
Tom had $190 and Jane had $60. After each of them received an equal amount of money from their father, Tom had twice as much money as Jane. How much did their father give each of them?
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Thank you – I am very excited about teaching the use of bar modelling while learning about its exceptional power of problem representation!
Your teachable math emails have been/ are gold – thank you Kar-Hwee and Tze-Ping.