Eureka Math Parent Tips
Second Grade Module 7
This document is being produced for the purpose
of giving parents and students in Calcasieu Parish
a better understanding of the math concepts
being taught.
Problem Solving with Length, Money,
and Data
Module 7 presents an opportunity for
students to practice addition and
subtraction strategies within 100 and
problem-solving skills as they learn to work
with various types of units within the
contexts of length, money, and data.
Louisiana Standards:
• Fluently add and subtract within 100 using
strategies based on place value, properties
of operations, and/or the relationship between
addition and subtraction. Use addition to find the total number of objects arranged in rectangular arrays
with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.
• Measure the length of an object by selecting and using appropriate tools such as rulers, yardsticks, meter
sticks, and measuring tapes.
• Measure the length of an object twice, using length units of different lengths for the two measurements;
describe how the two measurements relate to the size of the unit chosen.
• Estimate lengths using inches, feet, centimeters, and meters.
• Measure to determine how much longer one object is than another, expressing the length difference in
terms of a standard length unit.
• Use addition and subtraction within 100 to solve word problems involving lengths that are given in the
same units, e.g., by using drawings (such as drawings of rulers) and equations with a symbol for the
unknown number to represent the problem.
• Represent whole numbers as lengths from 0 on a number line diagram with equally spaced points
corresponding to the numbers 0, 1, 2, …, and represent whole-number sums and differences within 100
on a number line diagram.
• Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using $ and ¢ symbols
appropriately. Example: If you have 2 dimes and 3 pennies, how many cents do you have?
• Generate measurement data by measuring lengths of several objects to the nearest whole unit, or by
making repeated measurements of the same object. Show the measurements by making a line plot,
where the horizontal scale is marked off in whole-number units.
• Draw a picture graph and a bar graph (with single-unit scale) to represent a data set with up to four
categories. Solve simple put-together, take-apart, and compare problems using information presented in a
bar graph.
Words to Know…
Bar graph
Category
Data
Categorical data
Coins
Dollars
Mental Math
Centimeter cube
Iteration
Compensation
Tape Diagram
Difference
Hash Mark
End point
Number line
Line plot
Second Grade Module 7
Students represent and interpret categorical data, which is produced by sorting objects or
information into categories. Students also use picture graphs and bar graphs to organize
and represent the data in as many as four categories. They record category counts in the
tables with both numerals and tally marks.
Second graders draw and label a
bar graph to represent data;
relate the count scale to the
number line.
Counting on strategy to
give change
I spent 85 cents, I paid with a
dollar bill. What is my change?
Students identify the value of the coin or bill and use an addition strategy to find
the sum or value of the group.
Second Grade Module 7
Students deepen their understanding of a length unit, seeing
again that just as it was with the centimeter cube, the length
unit is the distance from one end of the tile (or cube) to the
other. Students go on to create inch rulers using the mark and
advance technique with inch tiles to record each length unit
with a hash mark. Finally, they use their inch rulers to measure
and compare objects around the classroom.
Problem Solving:
Sam and Bill both built
fences around their
properties. Sam’s fence is 43
yards long. Bill’s fence is 19
yards longer than Sam’s.
Second Grade Module 7
Solve using a tape diagram.
Use a symbol (?) for the unknown.
Mr. Ramos has knitted 19
inches of a scarf he wants
to be 1 yard long. How
many more inches of scarf
does he need to knit?
Students infer and
draw conclusions
from the data set
and representations,
discovering that
while a table is
useful for organizing
data, a line plot
allows for the visual
comparisons of the
different quantities.