The purpose is that pupils learn how to build a bridge with cement and bricks.
They learn how to masonry bricks for a kind of Roman bridge.
You can use flour + spoons of salt (it won’t decay). Clean the stones or the results in warm water with dish soap and you can use them again. All the materials must be cleaned before reusing them. Use warm water etc.
Age indication: 7– 8 years and older.
Ask the pupil(s) to show their final product to you.
Ask a pupil to comment on the box.
More info: www.dijkstrahardenberg.nl