The STEM Christmas Teaching Resources offered by the IET is an amazing, inspiring set of ideas ranging from 30 minute (or less) tasks to experiments, baking, crafts and outdoor activities split into KS1 and KS2 ages. They are linked to the curricular subjects: Biology, Chemistry, D&T, Maths and Science.
“Free teaching resources and classroom activities for students including lesson plans, handouts and film clips. These IET resources are licensed under a Creative Commons Attribution-NoDerivs 2.0 Generic License. Please note, these resources and experiments have been specifically designed to be carried out with adult supervision or direction as appropriate, and it is recommended that the instructions are followed in a safe manner. All resources and experiments are carried out at your own risk.” https://education.theiet.org/campaigns/christmas-teaching-resources/
Santa’s suit replacement gives an opening into the insulation project, waterproofing as well as D&T – a brilliant Christmas activity, frozen bubbles sound fun, edible stained-glass sounds like Christmas presents, and so on! Lots of science, maths, and fun for all across the primary age range.
Santa’s Stem Workshop is the teacher support section, it classifies and lists all activities so that they are more easily accessible and also offers a great STEM Activity Sheet as a free download.