Grade 3 - Ontario Science Curriculum/STEM - Full Year Bundle - Updated in 2026

Grade 3 - Ontario Science Curriculum/STEM - Full Year Bundle - Updated in 2026 - 470+ worksheets and your entire science year planned! This bundle covers all expectations New Ontario 2022 Science Curriculum - Grade 3.

These massive units contains readings, diagrams, experiments, true/false, and much more!

***Strand A: STEM/Coding has been added to this unit at no extra charge!

Most importantly, we have made cross-curriculum connections to the grade 3 language program. Students will practice reading comprehension strategies (making connections, questioning, visualizing, and inferencing) as they work through this unit.

Check out the previews of these units to learn more about how it can benefit your students. We know you will love this no-prep, just print or upload to Google, time-saving resource!

Unit 1 - Growth and Changes in Plants

Some of the concepts that are covered:

• Basic needs of plants – light, water, air, space, and warmth
• Parts of a plant – diagram
• Parts of a plant – readings and activities for each part (roots, stem, leaves, flower, and seeds)
• Life cycle of seed plants and bulb plants
• Experiment – germinating seeds in the classroom
• How seeds are spread – animals and the wind
• Parts of a flower – diagram
• Differences between plants
• Adapting plants – cactus
• Photosynthesis – Plants need the sun
• Lab Experiment – water travels through a plant
• Animals need the sun
• How we use plants – food, medicine, shelter, clothing
• How indigenous groups use plant
• Relationship between plants and animals - how plants need animals, and how animals need plants
• Analyzing pictures – animal and plant relationships
• How food is grown – greenhouses, farms, and home gardens
• Locally grown food – Farmers’ Markets
• Organic food – use of pesticides in farming
• Environmental challenges to plants – drought, extreme cold, extreme heat, construction
• How humans can help plants
• 2-billion tree challenge – Canadian government
• STEM Activities
• Hands on Experiments
• Building models, systems, or structures
• Writing code
• Reading code
• Unit Test
• Answer pages for all activities

Unit 2 - Strong and Stable Structures

Some of the concepts that are covered:

• What are structures?
• Human-made structures and natural structures
• Structures hold a load
• Live loads and dead loads
• Stability of structures
• Structures – form and function
• Describing the form and function of various structures
• Properties of materials – strength, flexibility, durability
• Strong building materials – steel versus plastic
• Describing materials based on their properties
• Creating stronger building materials – layering, braiding/twisting, and folding
• Science experiment – layering activity – testing building materials
• Science experiment – folding activity - testing building materials
• Fasteners – glue, nails, screws, paperclip, zipper, rope, tape, buttons and more
• Strong fasteners
• Centre of gravity affecting stability
• Leaning Tower of Pisa – centre of gravity
• Centre of gravity experiments
• Forces acting on structures – tension and compression
• Effects of forces on objects – breaking point
• Struts and ties – compression (struts) and ties (tension)
• Strong shapes – triangles and trusses (uses struts and ties)
• Experiment – Using triangles to build strong structures
• Safe structures – using structures properly
• Structures in my environment – examining the building materials and fasteners
• The Great Pyramid still standing – lessons learned from the 5,000-year-old structures
• Effects of shelters (structures) on the environment
• STEM Activities
• Hands on Experiments
• Building models, systems, or structures
• Writing code
• Reading code
• Unit test
• Answer pages for all activities

Unit 3 - Forces and Motion

Some of the concepts that are covered:

• Non-contact forces versus contact forces
• Forces – push and pull
• Gravity – readings, activities, and experiment
• Electrostatic force – readings and questions
• Static electricity – reading and questions
• Dangers of static electricity
• Lightning – electrostatic force
• Magnetic forces – reading, activities, experiment
• Devices that use non-contact forces – magnetism, electrostatic, and gravity
• Contact forces – muscular force, friction, and spring force
• Friction – sliding friction, static friction, and rolling friction
• Muscular force in sports
• Forces acting on objects
• Unbalanced and balanced forces causing change in direction
• Examples of unbalanced and balanced forces
• Objects changing direction – sports examples
• Force diagrams – showing change in direction
• Forces in our everyday lives
• Forces of nature – tsunami (water force) and tornado (wind force)
• Natural forces – erosion
• Clearcutting forests causing erosion – diagram
• Wearing protective gear to be safe around forces
• STEM Activities
• Hands on Experiments
• Building models, systems, or structures
• Writing code
• Reading code
• Bank cards and the importance of coding
• Conducting research – invention of bank cards
• Unit test
• Answer pages for all activities

Unit 4 - Soils in the Environment

Some of the concepts that are covered:

• All About Soil
• Soil is Alive!
• What is In Our Soil?
• Experiment – Soil Composition Test
• Layers of Soil
• Investing Components of Soil
• Newspaper Article: The Superhero of Our Ecosystem
• Sandy Soil
• Silt Soil
• Clay Soil
• Loamy Soil
• Experiment – Testing Water Absorption
• Activity – Soil Permeability Test
• Water and Soil
• Blog Post: The Amazing Filtering Powers of Soil
• Plants Profiles – Types of Soil
• Plant Profile – Cactus
• Newspaper Article: Understanding Soils
• Soil and Its Super Powers in Food Production
• Additives in Soil
• Pesticides – Benefits and Drawbacks
• Coding - Else Statements
• Organic Vs Non-Organic
• Organic Matter
• Composting
• Improving Soil – Crop Rotation
• Different Uses of Earth’s Materials
• How Soil Supports Living Things
• Erosion
• Experiment – Soil Erosion Model
• Weathering Rocks = Soil Formation
• Weathering, Erosion, Deposition
• Controlling Soil Erosion
• Writing Code – Soil Types
• STEM – Testing Soil
• STEM Assignment – Soil Testing Machine
• Unit test
• Answer pages for all activities

*** Answer Pages for all worksheets

*** Unit Tests for all Units

BOTH GOOGLE AND PDF VERSIONS INCLUDED!