P5G STEM Cornflour Slime

Yesterday (Tuesday 21st March) Primary 5 had a wonderful science STEM day and made cornflour slime. The children all enjoyed getting involved with the experiments and trying things out and following the instructions to make new things and to show changes in colour and changes in state.

Cornflour slime

The children found it quite tricky to mix the cornflour and water and had to work hard to combine the two using lots of muscle power.

Eventually, when the consistency was correct the pupils chose their preferred colour for the slime.



  • adding a little water didn’t work well and we had to add more
  • cornflour and water mix to create a substance that is hard when you tap it and turns runny when you handle it.
  • it looked gooey and squishy
  • was hard to mix food colouring