Grade 4 · Math
Goal
Sort lines, angles, and shapes by their features, and identify right triangles.
You'll need
Scissors, a glue stick, and crayons.
Help with the hands, not the answer
Add these words to the student's AAC device before the lesson
parallel, perpendicular, right, acute, obtuse, angle, corner, line, side, shape, rectangle, triangle, meet, cross, equal, equilateral, isosceles, scalene, quadrilateral, parallelogram, trapezoid, rhombus
Words from the check are left out on purpose.
What's in this packet
Standards the check measures
CA Common Core Math 4.G.2: Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size. Recognize right triangles as a category, and identify right triangles. (Two-dimensional shapes should include special triangles, e.g., equilateral, isosceles, scalene, and special quadrilaterals, e.g., rhombus, square, rectangle, parallelogram, trapezoid.) CA
These are California's standards. Outside California, check the code and wording against your state's framework before citing them in an IEP.
Activity answers
Color the answer. Which one makes a square corner? Right. Which lines never meet? Parallel.
Parallel or perpendicular?. Parallel: Train rails; Ladder sides; Lines that never meet. Perpendicular: Window corner; Square corner; Lines making square corners
Angle sizes. 1. Acute 2. Right 3. Obtuse
What does it have?. Rectangle: Four right angles. Right triangle: One right angle. Circle: No straight sides
Name each one. Top left: acute angle. Top right: right angle. Bottom left: obtuse angle. Bottom right: parallel lines
Name the triangle. Equilateral: three equal sides. Isosceles: at least two equal. Scalene: no equal sides
Three sides or four?. Triangles: Equilateral; Isosceles; Scalene. Quadrilaterals: Parallelogram; Trapezoid; Rhombus
Parallel lines never meet, like the two rails of a train track. Perpendicular lines cross to make square corners, like the corner of a sheet of paper.
A square corner is called a right angle. An acute angle is smaller than a right angle. An obtuse angle is larger than a right angle.
We can sort shapes by their lines and angles. A rectangle has two pairs of parallel sides and four right angles. A triangle with one right angle is called a right triangle.
A triangle can also be named by its sides. An equilateral triangle has three equal sides. An isosceles triangle has at least two equal sides. A scalene triangle has no equal sides.
A shape with four sides is called a quadrilateral. A parallelogram has two pairs of parallel sides. A trapezoid has a pair of parallel sides. A rhombus has four equal sides, and a square has four equal sides and four right angles.
Color the right box.
Which one makes a square corner?
Which lines never meet?
Sort the cards.
Parallel
Perpendicular
Cut out along the dashed lines
Put them smallest to largest.
Cut out along the dashed lines
Match each shape.
Cut out along the dashed lines
Label each one.
Cut out along the dashed lines
Match each triangle.
Cut out along the dashed lines
Sort the cards.
Triangles
Quadrilaterals
Cut out along the dashed lines
How the student chose answers (mark one)
Independent, adult could not see
Independent, adult could see
With touch, a held device, or cues
Mark the last one if anyone touched the student, held anything for them, or cued them while they chose. Help with cutting or gluing after they chose doesn't count as support, but an adult who saw the choice means "adult could see."
Help after the student chose
Results
Date ____________ Check run by (role) ____________________
| Item | Standard | Student's answer | Right? |
|---|---|---|---|
| 1 | 4.G.2 | ||
| 2 | 4.G.2 | ||
| 3 | 4.G.2 | ||
| 4 | 4.G.2 | ||
| 5 | 4.G.2 | ||
| 6 | 4.G.2 | ||
| 7 | 4.G.2 | ||
| 8 | 4.G.2 | ||
| 9 | 4.G.2 | ||
| 10 | 4.G.2 |
Each question with four choices can be guessed right 1 time in 4. These 10 items are too few to conclude from alone. The on-screen report waits for 20 items at a level.
On a map of a town, Oak Street and Elm Street run side by side and never meet. Main Street crosses both of them at square corners. A small park is shaped like a triangle with one square corner. A road called Long Lane meets Main Street at an angle wider than a square corner. The playground is a triangle with three equal sides. The sign at the school is a triangle with two equal sides and one shorter side. The garden has four equal sides but no square corners. The parking lot has four sides, and only two of them are parallel.
Choose your answer, then color its box.
How are Oak Street and Elm Street related?
How are Main Street and Oak Street related?
Choose your answer, then color its box.
What shape is the park?
What kind of angle does Long Lane make with Main Street?
Choose your answer, then color its box.
Which shape has no parallel sides?
Which shape always has perpendicular sides?
Choose your answer, then color its box.
What kind of triangle is the playground?
What kind of triangle is the sign?
Choose your answer, then color its box.
What shape is the garden?
What shape is the parking lot?
Keep this away from the check, and use it only for scoring afterward.
| Item | Standard | Question | Answer |
|---|---|---|---|
| 1 | 4.G.2 | How are Oak Street and Elm Street related? | They are parallel |
| 2 | 4.G.2 | How are Main Street and Oak Street related? | They are perpendicular |
| 3 | 4.G.2 | What shape is the park? | A right triangle |
| 4 | 4.G.2 | What kind of angle does Long Lane make with Main Street? | An obtuse angle |
| 5 | 4.G.2 | Which shape has no parallel sides? | A triangle |
| 6 | 4.G.2 | Which shape always has perpendicular sides? | A rectangle |
| 7 | 4.G.2 | What kind of triangle is the playground? | An equilateral triangle |
| 8 | 4.G.2 | What kind of triangle is the sign? | An isosceles triangle |
| 9 | 4.G.2 | What shape is the garden? | A rhombus |
| 10 | 4.G.2 | What shape is the parking lot? | A trapezoid |