From Tim:
We had a good time at the CSI science experience. Dr Karl gave a presentation at the end which the parents attended. He showed lots of photos of his trip to America and combined it with some science facts.
We built a tower

• from straws to hold up a cup of water.
• We tested blood types ( they didn’t use their own they had samples provided).
• We tested for cauliflower DNA.
• We tested soils and pollens.
• We identified some bones.
• We burnt lots of stuff (with acid) and played with liquid nitrogen.