Grade 3 · Math · Unit

Shapes and Data

6 lessonsabout 4 weeks

The unit ends with three more days: a review day, the unit check, and a day to act on what the check showed.

Unit 8 of 8 in the Grade 3 Math Scope and Sequence

What's included in this unit

6 lessons in teaching order, each with its objective and a teacher note
21 practice pages to print, with an easier and a harder page where available
3 classroom tools for the projector
5 activities and pages that children do on a screen
6 check-up pages to collect

The whole unit in one file

Print every page of the unit at once, with the teacher guide first. The guide has one page per lesson: the objective, what to hand out, and the teacher note.

Teacher guide only (PDF)

The unit file, the teacher guide, and saved pages are included with the Teacher plan.

Your PDF is built in your browser, so it always has the newest version of every page.

Lessons

Lesson 1

Right angles

Children find the right angles, the square corners, of shapes and circle them.

Later gradeCommon Core 4.G.A.1Geometry

3 class days

Day 1Teach: The Shape Stretcher · Practice on paper (Core page)
Day 2Practice and check: Practice on paper (Easier page, Harder page) · Practice on screen · Check-up page
Day 3Reteach and extend: Act on the check-up pages: reteach the children who are not there yet, with the tool and a new page from the maker; the others take a harder page.

Lesson 2

Is it a rectangle?

Children decide whether a four-sided shape is a rectangle by checking its sides and its angles, knowing that a square is also a rectangle.

StandardCommon Core 3.G.A.1Geometry

3 class days

Day 1Teach: The Shape Stretcher · Practice on paper (Core page)
Day 2Practice and check: Practice on paper (Easier page, Harder page) · Practice on screen · Check-up page
Day 3Reteach and extend: Act on the check-up pages: reteach the children who are not there yet, with the tool and a new page from the maker; the others take a harder page.

Warm up and teach

Open The Shape Stretcher on the projector.

Practice on paper

Quad Squad
Core page Easier page Harder page

Practice on screen

Quad Squad (a page that checks the answers)

Check-up page

One more page of Quad Squad to collect at the end of the lesson.

Make more

Make more pages like this with the Shapes & Geometry maker.

Lesson 3

How many lines of symmetry?

Children find all the lines of symmetry of a shape and write how many there are.

Later gradeCommon Core 4.G.A.3Geometry

3 class days

Day 1Teach: The Folding Sheet · Practice on paper (Core page)
Day 2Practice and check: Practice on paper (Easier page, Harder page) · Practice on screen · Check-up page
Day 3Reteach and extend: Act on the check-up pages: reteach the children who are not there yet, with the tool and a new page from the maker; the others take a harder page.

Warm up and teach

Open The Folding Sheet on the projector.

Practice on paper

How Many Mirror Lines?
Core page Easier page Harder page

Practice on screen

How Many Mirror Lines? (a page that checks the answers)

Check-up page

One more page of How Many Mirror Lines? to collect at the end of the lesson.

Make more

Make more pages like this with the Shapes & Geometry maker.

Lesson 4

Graphs with a scale

Children read bar graphs whose scale counts by 5 and pictographs in which each picture stands for 5.

StandardCommon Core 3.MD.B.3Measurement and Data

2 class days

Day 1Teach: Practice on paper (Core page)
Day 2Practice and check: Practice on paper (Easier page, Harder page) · Practice on screen · Check-up page

Practice on paper

Big Scale Bars
Core page Easier page Harder page
Each Picture Means 5
Core page Easier page Harder page

Practice on screen

Pip's Stacking Fence — Build & Read a Bar Graph

Check-up page

One more page of Big Scale Bars to collect at the end of the lesson.

Make more

Make more pages like this with the Graphs & Data maker.

Lesson 5

A line plot with halves

Children read a line plot whose number line is marked in halves and write how many X marks stand above each number.

Prepares forCommon Core 3.MD.B.4Measurement and Data

2 class days

Day 1Teach: Practice on paper (Core page)
Day 2Practice and check: Practice on paper (Easier page, Harder page) · Practice on screen · Check-up page

Practice on paper

Halfway Marks
Core page Easier page Harder page

Practice on screen

Shelly's Tide-Line — Measurement Line Plots

Check-up page

One more page of Halfway Marks to collect at the end of the lesson.

Make more

Make more pages like this with the Graphs & Data maker.

Lesson 6

Measure to the nearest quarter inch

Children measure lengths to the nearest half and quarter inch on a ruler and show the lengths as Xs on a line plot marked in quarters.

StandardCommon Core 3.MD.B.4Measurement and Data

2 class days

Day 1Teach: Ruler · Practice on paper (Core page)
Day 2Practice and check: Practice on paper (Easier page, Harder page) · Check-up page

Warm up and teach

Open Ruler on the projector.

Practice on paper

Measure to the Nearest Quarter Inch
Core page Easier page Harder page

Check-up page

One more page of Measure to the Nearest Quarter Inch to collect at the end of the lesson.

Teacher note

Common mistakes: Children count the marks from 0, not the spaces, so every length comes out a quarter inch too long. Others read each small mark as a half (2¼ becomes 2½) or write 2 2/4 for 2½. When a pencil does not start at 0, they write the number where it ends.
Words to use: On the Ruler, set the units to inches and turn off "Show length." "How many small spaces in one inch? Eight. So a quarter inch, one of four equal parts, is two spaces." Leave the start handle at 0 and drag the end handle two small spaces past the 2. "How long is the bar? Two inches and one quarter of an inch: 2¼." Turn "Show length" on to check: it reads 2 1/4 in. (If it shows eighths, nudge with the arrow keys.) Do 3½ and 1¾ the same way. Then put the end at 3¼, move the start handle to 1, and ask how long the bar is now (2¼). Give each pair a paper strip and a ruler: they measure it to the nearest quarter inch, say how they know, and add an X to a class line plot.
What to watch for: On the easier page, six pencils are each lined up with their own ruler, marked in halves; the lengths are whole and half inches; there is no line plot. On the page for everyone, eight pencils lie on rulers marked in quarters (here one space is a quarter, not two); the child writes each length, draws an X for each pencil on the line plot, and answers two questions. On the harder page, the pencils start at the 1 or the 2, and the child counts the inches and quarter inches from where the pencil starts to where it ends (from 1 to 3¼ is 2¼). The rulers are drawn smaller than a real ruler: the child reads the ruler on the page. On the line plot every quarter inch from 1 to 4 has a labeled tick mark; two pencils of the same length make a stack of two Xs.

Unit check: before and after

Two short paper checks made from this unit's own worksheets. Give Check A before you teach the unit and Check B after it, and you can see what changed. Each part belongs to one lesson.

Part 1: Lesson 1, Right angles (1 task)
Part 2: Lesson 2, Is it a rectangle? (1 task)
Part 3: Lesson 3, How many lines of symmetry? (3 tasks)
Part 4: Lesson 4, Graphs with a scale (1 task)
Part 5: Lesson 5, A line plot with halves (1 task)
Part 6: Lesson 6, Measure to the nearest quarter inch (1 task)

Check A (PDF) · 3 pages Check B (PDF) · 3 pages

Printing a check counts as a download, like any worksheet.

Answer key A Answer key B Teacher pages: points, class record, and what to do next

The answer keys and the teacher pages come with the paid Teacher plan.

This is a classroom check of this unit's lessons. It is not a standardized test, and its points are not a grade.

Unit checks