Grade 3 Science: Engineering and Science Applications
Free Grade 3 Science unit on Engineering and Science Applications: 10 lessons in order. Includes practice questions and answer keys.
10 lessons in this unit
What is engineering?
Learn that engineers use science to solve practical problems, and meet different kinds of engineer and the steps of the design process.
Lesson 2Identifying practical problems
Learn to notice everyday problems that need solutions, describe them clearly with criteria (what a solution must do) and constraints (limits like time and materials).
Lesson 3Designing simple solutions
Learn to brainstorm several solutions, sketch them, compare against criteria and choose the best idea to build.
Lesson 4Materials and structures
Learn how shape and material affect the strength of structures, such as triangles, arches and tubes, and test paper beams.
Lesson 5Building models
Learn to turn a chosen design into a working model using safe materials, measuring and cutting accurately and following the plan.
Lesson 6Testing designs
Learn to test a model fairly against the criteria, keep the test the same each time, and collect clear evidence about how well it works.
Lesson 7Improving designs
Learn to use test results to find weak points, suggest changes, make one change at a time and test again to see if the design improved.
Lesson 8Recording results
Learn to record engineering test data in tables, show it in bar graphs, label units and write a short conclusion that uses the evidence.
Lesson 9Teamwork
Learn how engineering teams share roles, listen respectfully, solve disagreements and combine skills to build better solutions together.
Lesson 10Engineering project
Bring the whole design process together in a final project: define a problem, design, build, test, improve, record and present a solution.