Gather a block base, a tub/pan, Jenga or any other wooden blocks, and beans.
Pour the beans in your bin.
Use the blocks to build a “house” on the beans (to represent sand). Notice how unstable the blocks are on top of the beans!
Then use the blocks to build a “house” on the block base (to represent rock). The blocks are much more stable on this base!
The man who built his house on the rock made the wise choice and his house stood strong. The Bible teaches us how to make wise choices!