True or False Equations
TEACHERS:
SUBJECT:
Lauri Lonon
Math First Grade
STANDARD:
 1.OA.7 Understand the meaning of the equal sign, and determine if equations involving
addition and subtraction are true or false. For example, which of the following equations
are true and which are false? 6=6, 7=8-1, 5+2=2+5, 4+1=5+2
OBJECTIVE (EXPLICIT):
 Create equations that are true or false by using playing cards
EVIDENCE OF MASTERY (MEASURABLE):
SUB-OBJECTIVES, SWBAT (SEQUENCED FROM BASIC TO COMPLEX):

KEY VOCABULARY:
MATERIALS:
True
Scale
False
Cubes
Playing Cards (1-10)
Symbol cards: +, -, =
ENGAGE (MAKE CONTENT AND LEARNING RELEVANT TO REAL LIFE AND CONNECT TO
STUDENT INTEREST)
BEFORE
TEACHER WILL:
Ask:
 If I add the numbers 4 and 5
together, how many will I have?
 How can I prove that answer?
(Use cubes to prove your answer)
Say: I will put these 9 cubes on one side of
our scale.
Ask:
 Is our scale balanced?
 How do you know?
 What do we need to do to make the
scale balanced?
 If I write part of an equation as 4+5,
and we know that is 9, what is
another equation that will give us the
sum of 9?
 Ex. If we add 7 and 2 together, how
many will I have?
 How can I prove that answer?
(Use cubes to prove your answer)
Say: I will put these 9 cubes on the other
side of our scale.
Ask:
 Is our scale balanced now?
 How do you know?
Say: On the first side of our scale we had
4+5. On the other side of our scale we had
7+2. We can write an equation that shows
what we just did: 4+5=7+2.
Provide another example for
subtraction. Ex. 4+5=10-1
Ask:
 If I start back with the numbers 4 and
5 and put the cubes back on the
scale, and then I put 3 and 1 on the
other side of the scale, is our scale
balanced or unbalanced?
 So how would I write an equation to
show this equation is not true?
(ex. 4+5 ≠ 3+1)
Provide another example for
subtraction. Ex. 4+5 ≠ 6-2
CO-TEACHING STRATEGY IF APPLICABLE
STUDENT WILL:
 Orally answer the questions
 Students guide teacher through
example using cubes.
DURING
AFTER
TEACHER WILL:
STUDENT WILL:
Explain activity: With a partner, you will be
 Make true or false equations using
using addition and subtraction to create an
playing cards and the symbols = or ≠
equation that is true or false.
 Write equations on record sheet
First, Mix up playing cards and pass out the
“deck” to Player 1 and Player 2.
Next, Player 1 picks 2 cards and lays them
down joining them together with a plus or
minus sign. (ex. 9-3) Player 1 will pick two
more cards (ex. 5+3) and lay them down
joining them together with a plus or minus
sign.
Next, Player 1 has to make the equation
true or false by using an = sign or a ≠ sign.
(ex. 9-3≠5+3 or 9-3=5+3)
Last, Player 2 will use cubes to prove if the
equation that Player 1 made is true or false.
Player 2 will state: Your equation is true.
OR Your equation is false. Students will
write the equation on a record sheet.
Repeat, but starting with player 2.
CO-TEACHING STRATEGY IF APPLICABLE
TEACHER WILL:
STUDENT WILL:
Ask:
Partner Share:
 What does it mean to have
 An equation that is true is equal on
equations that are true?
both sides.
 What does it mean to have
 An equation that is not equal is false
equations that are false?
 Give an example of an equation that
Say:
is true.
 Give your partner an example of an
 Give an example of an equation that
equation that is true.
is false.
 Give your partner an example of an
Write: An equation that is true is equal on
equation that is false.
both sides. An equation that is not equal is
 Write in math journals what it means false.
Draw an example of an equation that is
to have an equation that is true.
true using a scale.
Write what it means to have an
equation that is not true. Draw a
picture of a scale and show an
equation to show true. Draw a
picture of a scale and show an
equation that is false.
CO-TEACHING STRATEGY IF APPLICABLE
Name _______________________________
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