Go Math! Grade 3, Chapter 2: Represent and Interpret Data
In this unit, your child reads and makes frequency tables, picture graphs, bar graphs, and line plots. Pictures and bars can stand for more than one, so they skip count by 2s, 5s, or 10s to read them. They solve how-many-more problems and measure to the nearest half or quarter inch. Next, multiplication begins, building on that skip counting.
By Robert “Bobby” BarnettMath teacher, parent, and founder of Bobby’s Math Club
What is my child learning in Chapter 2?
- Making picture graphs where one picture stands for 2, 5, or 10, and reading bar graphs to compare amounts. Learn more: Reading picture graphs and bar graphs
- Measuring to the nearest half and quarter inch and showing the lengths on a line plot with X marks. Learn more: Measuring to the nearest quarter inch
Sample questions to try together
These are real questions from our practice. Tap the speaker to hear one read aloud, or the light bulb for a hint, and talk about the answer together.
Question 1 of 3
Look at the bar graph. How many more students chose Green as their favorite color than Blue?
- 10
- 4
- 6
How you can help
- Make a tally of birds, dogs, or bikes you see on a walk, then turn it into a picture graph where each picture stands for 2.
- Take a quick family vote on dinner or a movie, show it as a bar graph, and ask your child how many more people chose the winner.
- Ask your child to measure leaves or sticks from a walk to the nearest quarter inch, then line them up from shortest to longest.
Where kids can get stuck
- Counting each picture as one when the key says each picture stands for 5.
- Reading a bar that ends between grid lines as the nearest line instead of the number halfway between.
- Confusing half-inch and quarter-inch marks on a ruler, reading 2 1/2 as 2 1/4.
Practice makes perfect
Bobby's Math Club has practice problems that adapt to your child’s level, each with a detailed explanation and an easy-to-follow video, so your child can build confidence in these skills one step at a time.
Words your child will hear
- frequency table
- A table showing how many times each answer or item appears.
- tally
- A quick mark made for each thing counted, grouped in fives.
- picture graph
- A graph where small pictures stand for a set number of things.
- key
- A note on a graph saying what each picture is worth.
- bar graph
- A graph where the length of each bar shows how many.
- scale
- The numbers on a graph that tell how much each space is worth.
- line plot
- A number line with X marks above it to show how many times each measurement appears.
- half inch
- One of 2 equal parts of an inch.
Want to help your child master reading and making graphs?
In Bobby's Math Club, your child practices these skills at just the right level, with a hint when they need one, a clear explanation after every question, and kid-friendly videos. Unlimited practice is free.
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Written by Robert “Bobby” Barnett
Bobby is an award-winning math teacher, the author of Meet Every Learner’s Needs, and the father of two elementary-school math learners. He uses Bobby’s Math Club with his own kids a few times every week. Learn more or contact Bobby.
Which math standards does Go Math! Grade 3 Chapter 2 cover?
Go Math! Grade 3 Chapter 2 covers these math standards. Each one links to what it means, sample questions, and teaching strategies.
For teachers: Unit names and order vary between editions and districts, so your school’s own materials have the exact sequence. Learn how Bobby's Math Club can help your students grow.