Lesson
Strategy Focus
16 Draw a Diagram
MATH FOCUS: Transformations and Symmetry
Learn About It
Read the Problem Wanda’s art class is studying block prints. The block must be a
reflection of what each student wants his or her print to look
like. A sample print and block is shown below.
Sample
Print
Block
Wanda will make a block print sign for a school bike sale
fundraiser. The sign will say “USED BIKES.” She will design the
block so the print looks like the block letters above. Which of the
letters will look the same in the print as on the block?
Reread Look for the important information.
What is Wanda’s project?
●
What question will you answer when you solve the problem?
●
Mark
the Text
Search for Information Read the problem again. Then mark or find the information you
need for each part of the problem.
Record Write the information that will help you solve the problem.
© Triumph Learning. OT113eIW16
The block must be a
In the sample block, the letters
same as in the print.
of the print.
and
This information will help you answer the question.
132 Unit 4 Using Measurement and Geometry
look the
Decide What to Do
You know the text of Wanda’s print. You know you need to reflect
that text to make the block. You also know that you can answer the
question after you design the block.
Ask How can I find which letters will look the same in the print?
I can use the strategy Draw a Diagram.
●
Then I can compare the letters in the image and its reflection to
see which ones look the same.
●
Use Your Ideas
Step 1
Draw a vertical line of reflection. You will reflect the
image over this line. Draw a diagram of your block on
the grid below.
Be careful to
reflect the
letters correctly
over the vertical
line.
Step 2
Study the letters in the print and in your diagram of the
block to decide how to answer the question.
The letters
Review Your Work
look the same in the print and the block.
Check to be sure you did not miss any matching letters.
How does drawing a diagram help you solve this problem?
© Triumph Learning. OT113eIW16
Describe
133