Ask children to package the pebbles in the sandwich bags - 10 to a bag. The child should write 31. Give the child two bags, for example a 2T3 and a 1T8 and ask what the result would be if the bags were repackaged. Caregiver and one or more children.
Addition involves the composing of two classes to make a third class.
When the numbers get over ten, we group things by tens so that items are easy to count. Here children compose classes and group by tens. My child is a Boy Girl, Age years old. The information from the above form remains strictly confidential. It will only be used by KidSource OnLine and by the author of these activities.