Room 3 read a story this morning about a group of ten dinosaurs who build a swimming pool together. The dinosaurs in the story use all kinds of different machines and different materials including cement and concrete to make their pool. To make cement and concrete which are tough and strong, it's important to properly measure the amounts of each earthy "ingredient" to be added to the mixture - just like cooking! Special - industrial sized - containers and scales are used to make sure that the measurements are just right.
We had a dig of our own out in our sandpit, and played with some differently sized containers. Once again, we filled them up until they were full (at capacity), half full (half capacity) and empty (no capacity in use!). We worked so hard that we earned 5 minutes of free construction time :)
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