A very large container ( a large plastic storage container is good)
A warm day (this is a good outside activity)
Egg beaters
Ice cream scoops
Strainers
Funnels
Old shirts or plastic garbage bags for the kids to wear to keep clean and dry.
WHAT YOU DO:
Dissolve the soap flakes in 2 gallons of warm water.
Beat with an egg beater until the container is full of foam
Let the children play in the foam with their hands.
Children can scoop, strain and pour the foam through their fingers and funnels and anything else you can find.
This is a good exercise in texture and its a good time to discuss the difference between solids (the strainer, the funnel, sponges) and liquids (the soapy water).