As part of our History work on Ancient Egypt (with Year 6), we carried out a mummification experiment to find out what would happen to a range of fruit and vegetables (and a tinned hotdog) if they were left in a natron mixture of 40 days.
At the start of the experiment, we drew the 'Pharaohs' before they were put into the natron (which was made up of table salt, washing soda and baking soda). We also measured the weight, length and circumference too.
After 40 days, Mr. Gray removed the Pharaohs so we could repeat the measurements and also make visual comparisons with the control Pharaohs - these had been placed into bags and kept in the same conditions as the mummified Pharaohs.
We were really surprised by how much moisture had been absorbed by the natron and the effect this had had on the Pharaohs (as you can see from the photos).