The Equal Sign
You’re Not Too Young for
Algebra!
Beatriz Miyares Kimball
McDermott Elementary
Little Rock, AR
The Equal Sign
You’re Not Too Young for Algebra!
Objectives
Watch and
Learn
Game
Pan Balance
Resources
The End
Independent
practice
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
Ms. Gregory gave each class
the same amount of sports
equipment.
3+4=5+2
1
4
2
5
3
6
=
1
2
7
6
http://www.clker.com/clipart-15136.html
3
7
4
5
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
5
6
7
2
3
4
8
9
10
=
1
2
8
3
9
4
10
5
6
7
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?
7 +6
8 + 5 = ____
=
1 2 3 4 5 6 7
Click the
mouse.
http://www.clker.com/clipart-15136.html
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?
____
6 + 9
= 8 + 7
=
1 2 3 4 5
6
Click the
mouse.
http://www.clker.com/clipart-15136.html
A number balance can demonstrate
the properties of the equal sign.
When you are
finished, close
the website.
Click the
blue oval.
Watch!
Now you can practice using a
balance to build equivalent
sums or you can choose to
play a game.
Play a game
Use a balance
Let’s play
a Game
Have fun.
4 + 6 = 10
7+ 7 = 14
7 + 8 =15
4+6
7+7
9 + 4 = 13
9+4
6 + 6 = 12
6 6+ +6 6= =1212
6 + 6 = 12
6+6
9 + 8 = 17
7+8
6 + 5 = 11
6+65+
=11
5
7 + 9 = 16
6+3=9
6 + 7 = 13
7+9
6+3
9+8
6+7
Do you know your equivalent sums?
2+6
2+6=8
10 + 6
10 + 6 = 16
www.murray.k12.ga.us
4+5
4+5=9
4+
4 +5 5==9 9
6
9 +9
6 =+15
=15
9 9+9+6+6=6=15
15
3+8
7 + 10
3 + 8 = 11
7 + 10 =17
6+8
7+5
6 + 8 = 14
7 + 5 = 12
4+4
4+4=8
5+5
5 + 5 = 10
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.
Click the
balance!
3. Click the blue pan.
Click buttons to type
an equivalent sum.
4. Reset the balance
for a new set of
equivalent sums.
Let’s Practice
7 + 4 = ____ + 3
Click
the
correct
addend.
11
8
4
7
Try Another Problem
8 + 6 = ____ + 7
Click
the
correct
addend.
9
6
7
14
Try A Different Problem
____ + 4 = 6 + 7
Click
the
correct
addend.
9
6
7
13
Try This Problem
4 + 6 = 7 + ___
Click
the
correct
addend.
10
6
17
3
Try One More
9 + 6 = 6 + ___
Click
the
correct
addend.
10
9
21
3
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