Post on 05-Jan-2016
transcript
You’re Not Too Young for Algebra!
The Equal Sign
Beatriz Miyares Kimball
McDermott Elementary
Little Rock, AR
The Equal SignObjective
s
Resources
Watch and Learn
Game
Pan Balance
Independent
practice
You’re Not Too Young for Algebra!
The End
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.
Hi! I’m an equal sign.
Many people think that when they see me they are supposed to find the answer to an equation.
3 + 4 = _7_
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
3 + 4 = 5 + 2
=
Ms. Gregory gave each class the same amount of sports
equipment.
1 12 23 3 4
4 5
5
66
77
http://www.clker.com/clipart-15136.html
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
=1 12 23 34 4
5
5
6
6
7
7
8 89 910 10
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
1 2 3 4 5 6
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
=1 2 3 4 5 6
Click the mouse.
6
http://www.clker.com/clipart-15136.html
A number balance can demonstrate the properties of the equal sign.
Click the blue oval.
When you are finished, close
the website.
Watch!
Now you can practice using a balance to build equivalent sums or you can choose to
play a game.
Use a balancePlay a game
Let’s play a Game
Have fun.
9 + 6 = 15
9 + 6 = 15
4 + 5 = 9
6 + 6 = 126 + 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 = 11 9 + 8 = 17
9 + 8
7 + 10
5 + 5
4 + 6 7 + 7
6 + 8
7 + 8
9 + 6
6 + 5
3 + 8
9 + 4 6 + 76 + 6
7 + 5
7 + 9
10 + 6
6 + 3
4 + 52 + 6 4 + 4
www.murray.k12.ga.us
I hope you matched all
the pairs correctly!
Let’s try using a balance to build equivalent sums.
The instructions are on the next slide.
Close the site when you are done.
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!
Let’s Practice
7 + 4 = ____ + 3
11
4
8
Click the
correct addend.
7
7
9
14
6
Try Another Problem
8 + 6 = ____ + 7
Click the
correct addend.
7
9
13
6
Try A Different Problem
____ + 4 = 6 + 7
Click the
correct addend.
17
10
3
6
Try This Problem
4 + 6 = 7 + ___
Click the
correct addend.
21
10
3
9
Try One More
9 + 6 = 6 + ___
Click the
correct addend.
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.
You may want to try this program again
later.
Great Learning!
Good Bye!Click your right mouse button.
Then click “end show”.
Click the red “x” to close the program.
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