from concrete to abstract: helping all students develop algebraic thinking skills heather sparks,...
TRANSCRIPT
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From Concrete to Abstract:Helping ALL Students Develop
Algebraic Thinking Skills
Heather Sparks, NBCTTaft Middle SchoolOklahoma City Schoolswww.hisparks.com
August 9, 2010
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*Adapted from Van de Walle and Lovin
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Turtle and Snail
On summer day, Little Green Turtle challenged Teeny Tiny Turtle to a race from the oak tree to the elm tree.Turtle travels at a rate of 3 feet per minute and Snail travels at a rate of 2 feet per minute. The trees are 12 feet apart.
STORY:
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Turtle and Snail
12 feet
PICTURE
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time distance time distance
TABLE
0
1
2
3
4
Turtle Snail
0
1
2
3
4
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RULE OREQUATION
Turtle: multiply by 3 d= 3t
Snail: multiply by 2 d = 2t
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GRAPH
distance in feet
time
0 1 2 3 4 5 6 7 8
12
11
10
9
8
7
6
5
4
3
2
1
0
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x y2 53 64 75 86 9
x y-2 7 0 3 1 14 -56 -9
What’s My Rule?
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Every graph tells a story…
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Let’s Apply!
Ball Bouncing
Slinky Stretch
Cup Stacking
Party Tables
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Extend and Explain
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Heather’s Website:www.hisparks.com