Water fight! What's better way is there to stay cool on a hot summer day than engineering and playing with your own water blasting soaker? Put on your colour changing water reactive jacket and invite friends for a cool summer water shooting contest. Learn how valves help control water and gas flows and experiment with making a one way pump to pump up your balloon monsters for target practice or some serious summer fun! Age Recommended: 6-8 years old Activities: 1. Engineering a wooden water blaster 2. Add water-activited, colour-changing stickers to your target vest 3. Experiment to learn about one-way valve 4. Craft balloon monsters 5. Read and explore more from Odyssey Science magazine Explore STEAM: - Air and water flow - working principle of valves - Science of pumps - Biology: Heart - Animal Science What's included: - Wooden pieces - 2x one-way valves - silicone tubing - hand pump - target apron - colour changing stickers - Balloons - Magazine and instruction mannual You will also need: Scissors and water