Greatest Common Factor Bingo GCF Bingo is a game where students can both strategize and gain practice calculating the greatest common factor of a set of numbers.
Game: - plays in pairs - use grid 2x2, 3x3, 4x4 or 5x5 - each student fills up its grid by writing numbers in its square fields - FIRST WAY (best for grids 2x2 and 3x3): teacher says numbers and students write them in grid, by choosing field by their own will. - SECOND WAY (for each pair of students): one of two players choses a number, says it out loud so both opponents write that number at their grid, on place they like. Then next player says a numb er, and again, both players pick a place and write that number. It is best to keep your grid in secret from the opponent. And that way, they write numbers until the entire grid is full - To get a score: look at each row and column and calculate its GCF, then write it down in circle at its end. Add together all that is in circles and write it in “smiles�. That is your total score. - Winner: the player whose score is greater than his opponent. - Proposal: ask students to choose numbers less than 100. - Easier: if given numbers in grid can repeat (teacher or students say the same number) more than once.
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