Roll A Sum 99252 3 to 4 models can

3 to 4 models can be made at a time

It can be used just for fun

low-preparation activities focus on teaching the 'why' and providing meaningful practice for students

Encapsulated solar cell modules mounted in sturdy black polycarbonate cases

Need a pair of wheels for TT style hobby motors

Roll A Sum 99252 3 to 4 models canHelp children develop mental calculation and counting with Roll A Sum dice. Simply roll the dice and let the numbers guide your counting. Firstly roll the dice and look at the upper face, then group the dice together that are related. Choose the dice you want to use and the best dice to start your sum. Contains 10 dice and 1 carry sack. Ages 4 9 yrs. WARNING: CHOKING HAZARD SMALL PARTS. Not for children under 3 yrs. A collection of ten number dice for