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You’re Not Too Young for Algebra! The Equal Sign Beatriz Miyares Kimball McDermott Elementary Little Rock, AR
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The Equal Sign Objectives Resources Watch and Learn Game Pan Balance Independent practice You’re Not Too Young for Algebra! The End
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A.5.2.2 Students will express mathematical relationships using equalities. Students will match equivalent sums. Students will use a balance to write equivalent sums. Students will identify missing addends in equivalent equations.
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Hi! I’m an equal sign.
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Many people think that when they see me they are supposed to find the answer to an equation. 3 + 4 = _7_
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An equal sign really means “is the same as.” When you see an equal sign, both sides of the equation must be equal. 3 + 4 = 5 + 2
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= Ms. Gregory gave each class the same amount of sports equipment. 1 1 2 2 3 34 45 5 6 6 7 7 http://www.clker.com/clipart-15136.html
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Ms. Croft and Ms. Powell had the same number of children with good behavior. Ms. Croft had 4 girls and 6 boys. Ms. Powell had 7 girls and 3 boys. 4 + 6 = 7 + 3 = 11223344 5 5 6 6 7 7 889910
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Click the mouse. Ms. Kirchner had 8 red pencils and 5 blue pencils in one box. She had some red pencils and 6 blue pencils in the other box. If she had the same number of pencils in each box, how many red pencils did she have? 8 + 5 = ____ + 6 = 7 7 http://www.clker.com/clipart-15136.html 123456
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Ms. White sold some pencils and 9 pens on Monday. She sold 8 pencils and 7 pens on Tuesday. If she sold the same number each day, how many pencils did she sell on Monday? ____ + 9 = 8 + 7 = 123456 Click the mouse. 6 http://www.clker.com/clipart-15136.html
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A number balance can demonstrate the properties of the equal sign. Click the blue oval. When you are finished, close the website. Watch!
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Now you can practice using a balance to build equivalent sums or you can choose to play a game. Use a balance Play a game
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Let’s play a Game Have fun.
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9 + 6 = 15 4 + 5 = 9 6 + 6 = 12 9 + 6 = 15 4 + 5 = 9 6 + 6 = 12 6+ 5 =11 Do you know your equivalent sums? 6 + 3 = 9 7 + 8 =15 7+ 7 = 144 + 6 = 10 2 + 6 = 8 10 + 6 = 16 9 + 4 = 13 6 + 6 = 12 4+ 5 = 9 9 + 6 =15 7 + 9 = 16 3 + 8 = 11 6 + 8 = 14 7 + 10 =17 7 + 5 = 12 5 + 5 = 10 4 + 4 = 8 6 + 7 = 13 6 + 5 = 119 + 8 = 17 9 + 8 7 + 10 5 + 5 4 + 67 + 7 6 + 8 7 + 8 9 + 6 6 + 5 3 + 8 9 + 46 + 76 + 6 7 + 5 7 + 9 10 + 6 6 + 3 4 + 52 + 64 + 4 www.murray.k12.ga.us
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I hope you matched all the pairs correctly!
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Let’s try using a balance to build equivalent sums. The instructions are on the next slide. Close the site when you are done.
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1.Move and scroll the screen so you can see all of the balance. 2. Click the red pan. Click buttons to type a sum. 3. Click the blue pan. Click buttons to type an equivalent sum. 4. Reset the balance for a new set of equivalent sums. Click the balance!
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Let’s Practice 7 + 4 = ____ + 3 11 4 8 Click the correct addend. 7
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7 9 14 6 Try Another Problem 8 + 6 = ____ + 7 Click the correct addend.
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7 9 13 6 Try A Different Problem ____ + 4 = 6 + 7 Click the correct addend.
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17 10 3 6 Try This Problem 4 + 6 = 7 + ___ Click the correct addend.
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21 10 3 9 Try One More 9 + 6 = 6 + ___ Click the correct addend.
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What does the equal sign mean? A B Find the answer to a math problem. One side of an equation is the same as the other.
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You may want to try this program again later.
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Great Learning!
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Good Bye! Click your right mouse button. Then click “end show”. Click the red “x” to close the program.
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Resources http://www.tlionline.net/ http://www.clker.com/clipart-15136.html clip art\ahh-sympathy-ver3.wav http://illuminations.nctm.org/ActivityDetail.aspx?id=26 www.murray.k12.ga.us http://www.youtube.com/watch?v=517db7urh0o
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