I have chosen to focus on the Alien Chemistry activity set. The fizzing and foaming activity could be adapted to work in any class level in the junior end of the school. For 1st or 2nd class, I would tie this to a previous ART/STEM lesson where children collaborated in building a rocket ship from recycled materials. This lesson our rockets will be blasting off and it is our job to create the rocket fuel. I would provide a range of acids (Lemon juice, orange juice, vinegar, cola), carbonates (eggshells, chalk, baking soda, washing powder) and maybe even some red-herrings, such as flour, sugar, water and milk. The children will roll a dice twice to randomly select a pairing of an acid (or milk/water) and a carbonate (or flour/sugar). The children will observe the effectiveness of their rocket fuel. After discussion and conferencing with the teacher, the group could choose to substitute their original carbonate or acid for another, in the aim to improve their rocket fuel’s fizziness. This could be a fun, discrete form of assessment for the teacher to gauge the children’s learning.