Domino Subitising

Use a plate with green playdough balls. How many do I have?   How could I make it so it{...}

Butterfly Cards https://nrich.maths.org/2657 Four children were sharing a set of twenty-four butterfly cards. It looked easy! They could have six{...}

Which is more?  $1 coins as long as their finger tip to elbow $1 coins as long as their foot{...}