Useful sheet to get students estimating the roots of integers other than perfect squares, through students knowledge of square numbers.Ask students to work in pairs or small groups.
Also works well as a lead in to surds at ks4
*Update* the post it idea below works fantastically well, students can then rank the answers in terms of their closeness to the answer to further reinforce working with decimals.
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A straightforward powerpoint introducing the ideas involved then a fun little game in Excel. Helps students to really think about the meaning of square root. Thanks.
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