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10 000 Top Maths Mysterynz Teaching Resources

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Last Updated: 15 December 2020

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A Peg is put at each end of the number line, for example, on 0 and 100. Students choose a number between pegs and write it on a piece of paper. The rest of students ask less than or greater questions to find mystery number. With each question, peg is moved to eliminate numbers. For example, if is it greater than 25? Is answer by Yes, then zero peg is shifted up to 25 to eliminate all numbers 25 and under. If is it less than 75? Is answer by Yes, then the top peg is shifted down to 75 to eliminate all numbers 75 and over. This continues until the mystery number is finally found by squeezing in from above and below. Note that this game can be played on various number lines, including whole-Number lines starting at other than zero, and decimal or fraction number lines. Alternatively, use flip hundreds Board, showing all numbers in black and flipping numbers over to red as they are eliminate. When students are confident, remove number line and do activity by visualising. List numbers on whiteboard: I am thinking of numbers between 0 and 5. Write 0 5 Game continues until the number is find. Note that question, Is it greater than 3. 0? Do not eliminate 3. 0 itself As answer was No. Underlining of 3. 0 shows the mystery number could be 3. 0 where the mystery number is three-place decimal, like 0. 456, draw very long number line on the Board Board or modelling book showing 0 to 1 at either end. Progressively subdivide number line until decimal is find.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

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