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Early Division on MathLine on MathLine

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Early Division Early divisionincludes Early division includes : Division as Repeated Subtraction Breaking into Equal Groups or

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Students think about Early Division both ways! Early Division

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Equal Groups Division Division as Repeated Subtraction Computational Division Division with Remainders Division on MathLine includes : Division on MathLine includes : Long Division (single digit divisor) Early Division

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MathLine will effectively model ALL aspects of division for your students! Early Division

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This lesson covers Early Division Equal Groups Division Division as Repeated Subtraction Division as Repeated Subtraction Computational Division Computational Division

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Equal Groups Division Early Division using ‘trial & error’

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If we have 18 cookies in a jar, and we put them into 3 equal piles. How many in each pile? Early Division

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Find 3 equal groups Early Division

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Find 3 equal groups of 18 using ‘trial & error’ 18 ÷ 3 Early Division

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Groups of 7? 18 ÷ 3 Early Division 1 2 34 56 7

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Groups of 7? 18 ÷ 3 Early Division 1 2 34 56 7

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Groups of 7? 18 ÷ 3 Early Division 1 2 34 No

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Groups of 7, 7 & 4 are not equal 18 ÷ 3 Early Division 774

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Groups of 6? 18 ÷ 3 Early Division 1 2 34 56

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Groups of 6? 18 ÷ 3 Early Division 1 2 34 56

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18 ÷ 3 Early Division 1 2 34 56 Yes Groups of 6?

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Early Division 18 ÷ 3 = 6 See 18 divides by 6 - 3 times. So each pile has 6 cookies. 123

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Division as Repeated Subtraction Repeated Subtraction Early Division

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If we have 24 students playing soccer at gym time, and they split up into teams of 6. How many teams are there to play soccer? Early Division

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Now divide by subtracting Early Division

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Division as repeated subtraction One group of 6 from 24 24 ÷ 6 = Early Division 123456

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24 ÷ 6 = Early Division Two groups of 6 from 24 Two groups of 6 from 24 123456

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24 ÷ 6 = Early Division Three groups of 6 from 24 Three groups of 6 from 24 123456

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24 ÷ 6 = Early Division Four groups of 6 from 24 Four groups of 6 from 24 123456

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24 ÷ 6 = 4 Early Division Answer is 4, or there will be 4 teams to play soccer. 12 34

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Computational division Computational division Early Division Typically done through repeated subtraction Typically done through repeated subtraction

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22 ÷ 4 = 22 ÷ 4 = Early Division

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22 ÷ 4 = 22 ÷ 4 = Early Division 1234

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22 ÷ 4 = 22 ÷ 4 = Early Division 1234

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22 ÷ 4 = 22 ÷ 4 = Early Division 1234

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22 ÷ 4 = 22 ÷ 4 = Early Division 1234

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22 ÷ 4 = 22 ÷ 4 = Early Division 1234

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22 ÷ 4 = 5 22 ÷ 4 = 5 Early Division 12 5 groups of 4 With how many left over?

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Early Division 12 With two left over, remainder of 2 22 ÷ 4 = 5 r 2 22 ÷ 4 = 5 r 2

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Early Division 12 22 ÷ 4 = 5 r 2 22 ÷ 4 = 5 r 2 Notice that remainder 2 is also 2 of 4 22 ÷ 4 = 5 r 2 22 ÷ 4 = 5 r 2

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Early Division 12 Equal to 2/4 or 1/2 22 ÷ 4 = 5 r 1/2 22 ÷ 4 = 5 r 1/2

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Computational division Computational division Early Division also can divide also can divide from left to right

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Early Division 1234 22 ÷ 4 = 22 ÷ 4 =

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Early Division 1234 22 ÷ 4 = 22 ÷ 4 =

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Early Division 1234 22 ÷ 4 = 22 ÷ 4 =

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Early Division 1234 22 ÷ 4 = 22 ÷ 4 =

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Early Division 1234 22 ÷ 4 = 22 ÷ 4 =

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Early Division 1 2 345 5 groups of 4 With how many left over?

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Early Division With two left over, remainder of 2 22 ÷ 4 = 5 r 2 22 ÷ 4 = 5 r 2 12

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