I like to join this goal with learning number bonds to 10. The sooner they learn them, the easier future work will be. Of course they don’t have to at this point to know them by heart. They can just use their fingers to find out the answer.
Hang 10 bananas on one arm, next pick a different number of bananas and hang it on the other arm. Check if they balance/ are the same. They will not be so encourage your child to find the number that you can join it with to make the equal. Record your findings. Continue with all the other combinations until you find all the number bonds to 10.
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I am a big fan of Numicon. It is absolutely the best at building visuals in our heads. Simply put a 10 numicon shape on a table (say "number bonds to 10") , and place on top any numicon shape smaller or equal than 10(and say the number). You will quickly see the answer.
Look how easy it is to use it!
Click on the picture to view it on amazon.