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PlayOwl

Mathematics · Grade 4

Angles, Lines and Shape Classification

Learners name points, lines, segments, rays and angles, understand an angle as a turn measured in degrees (one degree is 1/360 of a full turn), find unknown angles by adding and subtracting parts, classify triangles and quadrilaterals by their angles and by parallel and perpendicular sides, and find lines of symmetry.

  • 4 lessons
  • About 90 minutes
  • Angles and shapes check: 8 questions
  • Ways to answer: fill in the blanks, choose an answer, label a picture, match pairs, type a number and sort into groups
See plans Included with Family, Teacher and School plans. Open in PlayOwl

What learners will discover

  • Identify points, lines, line segments, rays, right, acute and obtuse angles, and perpendicular and parallel lines.
  • Describe an angle as a turn measured in degrees, read angle measures, and find unknown angles by adding or subtracting parts.
  • Classify two-dimensional shapes by parallel or perpendicular sides and by angle types, including right triangles.
  • Recognise lines of symmetry and find how many lines of symmetry a shape has.

Lessons

  1. Points, lines, rays and angles 6 steps4 practiceabout 22 min
  2. Angles as turns 7 steps5 practiceabout 23 min
  3. Classifying shapes 6 steps4 practiceabout 23 min
  4. Lines of symmetry 7 steps4 practiceabout 22 min
  5. Angles and shapes check 8 questions at the end

Keep exploring

Games to practice with

  • Number-Line HopHelp the frog hop to the right number — from counting to negative fractions.
  • Paint by AnswersSolve each space, dip your brush and watch a picture come to life.
  • Array OrchardPlant trees in rows, pack fruit into crates and split big fields to multiply.

More 4th grade math

Guide for grown-ups