Early Division on MathLine on MathLine

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

Students think about Early Division both ways! Early Division

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

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

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

Equal Groups Division Early Division using ‘trial & error’

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

Find 3 equal groups Early Division

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

Groups of 7? 18 ÷ 3 Early Division

Groups of 7? 18 ÷ 3 Early Division

Groups of 7? 18 ÷ 3 Early Division No

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

Groups of 6? 18 ÷ 3 Early Division

Groups of 6? 18 ÷ 3 Early Division

18 ÷ 3 Early Division Yes Groups of 6?

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

Division as Repeated Subtraction Repeated Subtraction Early Division

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

Now divide by subtracting Early Division

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

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

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

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

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

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

22 ÷ 4 = 22 ÷ 4 = Early Division

22 ÷ 4 = 22 ÷ 4 = Early Division 1234

22 ÷ 4 = 22 ÷ 4 = Early Division 1234

22 ÷ 4 = 22 ÷ 4 = Early Division 1234

22 ÷ 4 = 22 ÷ 4 = Early Division 1234

22 ÷ 4 = 22 ÷ 4 = Early Division 1234

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

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

Early Division ÷ 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

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

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

Early Division ÷ 4 = 22 ÷ 4 =

Early Division ÷ 4 = 22 ÷ 4 =

Early Division ÷ 4 = 22 ÷ 4 =

Early Division ÷ 4 = 22 ÷ 4 =

Early Division ÷ 4 = 22 ÷ 4 =

Early Division groups of 4 With how many left over?

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