Hide various colored blocks around the classroom. Divide the class into groups of threes or fours, and ask the first group to find the six red blocks that you have hidden around the room, the second group to find the six blue ones, and so on. The first group to find all their blocks can take a turn in hiding the blocks for the rest of the children. This will help the children learn about colors and counting and also help them work as a team.
Set out a large selection of plastic, colored, rectangular, square or triangular blocks. Each child should be asked to try and stack the blocks on top of each other and see how many blocks she can build without the blocks falling. Show them how to place the blocks so they can build a higher pile. Reassure them that they can start again if their pile falls down. The children can be taught about being creative in the placement of the blocks, about shapes and mostly about patience.
Hand out sheets of different-colored paper and crayons. Suggest that the children make Easter cards for their mom and dad. Suggest that they use as many colors as possible and that they can draw one large Easter egg or several smaller ones. Draw a few eggs on the blackboard, but suggest they draw eggs that resemble the ones that they have for breakfast. You'll be amazed at the shapes they will create since most three-year-olds enjoy coloring, and making something for a parent can be a real incentive.
Lay a line with masking tape down the center of the room. Each child must try walking along the line without tipping over. This can teach them about balance. When they finish walking, they can try hopping on their left foot across the line and then with their right foot. You can play music so they can sing along while they hop and make the whole learning process fun.