Enigma — Can You Crack the Code?
Students break four intercepted messages: a shift cipher by brute force, a substitution cipher by frequency analysis with real English data, a keyword cipher using…
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Mathematics · Number
Students change the base and indices to see each index law expressed as repeated multiplication, covering the multiplication and division laws, powers of powers, and zero, negative and fractional indices. The full interactive is available to licensed Education Universe users.
Ask students to write the expanded form of an expression before revealing the law.
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Students break four intercepted messages: a shift cipher by brute force, a substitution cipher by frequency analysis with real English data, a keyword cipher using…
Randomised practice simplifying index-law expressions across multiplication, division, powers, zero and negative indices, with worked solutions and a core or extension…
A randomised ratio challenge in which students simplify ratios, find equivalent ratios, scale and share a quantity in a given ratio, using visual ratio bars and…
A companion lab in which students apply ratios, rates, percentages and percentage change to current Tour de France and weather data. The full interactive is available to…
A guided investigation covering ratio simplification, scaling, unit rates, percentages, discounts and percentage change in real-world contexts. The full interactive is…
Students practise scientific numeracy with continuously randomised questions covering SI units, metric conversions, scientific notation, concentrations and molar…
Indices & Index Laws Explorer is one of the licensed interactives in The Education Universe. This page describes it; teachers use it in lessons and classes with a licence or the free trial.