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Each Monday, Wednesday and Friday SENTINUS NI will be posting a challenge for primary school pupils. The challenges are suitable for KS1 and KS2 primary children, which will involve at home experiments to engage their minds in the world of STEM 

When you have completed the challenge, post it online and mention Sentinus in your comments, as there are prizes up for grabs! Don't worry if you don't have social media... just email to and we'll share it for you.