Will this help with my child's Grade 3 science homework?

Yes. StudyPug covers every Grade 3 science strand in the Ontario Curriculum, so your child can find a matching lesson or practice problem for whatever topic they are working on in class.

How long are the video lessons for Grade 3 science?

Most video lessons are short and focused on a single concept, making it easy for a Grade 3 student to watch one, try a practice problem, and move on without sitting through a long session.

Is there a provincial science test for Grade 3 in Ontario?

Ontario's EQAO assessments are administered in Grades 3, 6, and 9, but the Grade 3 EQAO focuses on reading, writing, and math - not science. There is no provincial science assessment at Grade 3.

Can my child use StudyPug on a tablet or phone?

Yes. StudyPug works on tablets, phones, and computers, so your child can review a science lesson at home, on the go, or wherever is most convenient for them.

Can I try StudyPug before paying?

Yes. StudyPug offers free sample lessons so you can explore the content before subscribing, and every paid plan includes a 30-day money-back guarantee if it is not the right fit.

ON Grade 3 Science Curriculum

Give your child the support they need to keep up with Grade 3 science in Ontario. Every topic follows The Ontario Curriculum so lessons connect directly to what is taught in class.

ON Grade 3 Science Curriculum

OE_IDExpectationsStudyPug Topic

1.1Advanced Investigation
- Investigation Design, Controlled experiments
- Variable Control, Independent and dependent variables
- Measurement, Standard units and precision
- Data Analysis, Patterns and relationships
2.1Ecosystems
- Ecosystem Components, Living and non-living elements
- Population Dynamics, Groups of organisms in area
- Communities, Interaction between populations
2.2Adaptations
- Structural Adaptations, Physical features for survival
- Behavioral Adaptations, Actions that aid survival
3.1Food Chains
- Energy Transfer, Producer to consumer flow
- Food Webs, Interconnected food chains
3.2Energy Pyramids
- Trophic Levels, Producers, consumers, decomposers
- Energy Loss, Energy transfer efficiency
4.1Forces
- Balanced Forces, Equal opposing forces
- Unbalanced Forces, Net force and motion
- Magnetic Forces, Fields and interaction
4.2Simple Machines
- Machine Types, Levers, pulleys, inclined planes
- Work and Force, Mechanical advantage
5.1Thermal Energy
- Heat Sources, Natural and artificial sources
- Heat Transfer, Conduction, convection, radiation
- Insulation, Materials and heat retention
6.1Landforms
- Formation Processes, Erosion, deposition, weathering
- Types of Landforms, Mountains, valleys, plains
- Changes Over Time, Rapid and slow changes
6.2Earth Materials
- Rocks and Minerals, Properties and classification
- Soil Composition, Components and properties
7.1Solar System
- Earth's Movement, Rotation and revolution
- Day and Night, Earth's rotation effects
- Seasonal Changes, Earth's tilt and orbit
8.1Human Impact
- Resource Use, Effects on environment
- Conservation, Protection strategies
8.2Climate
- Weather Patterns, Long-term weather trends
- Climate Zones, Regional variations
9.1Engineering Process
- Problem Definition, Identifying design challenges
- Solution Design, Creating and testing solutions
- Optimization, Improving designs
10.1Traditional Practices
- Traditional Practices, Resource Management, Sustainable practices
- Environmental Knowledge, Local ecosystem understanding

Grade 3 Science

About Grade 3 Ontario science

Ontario follows The Ontario Curriculum for science, organized around strands that build understanding of the natural and physical world. In Grade 3, students explore life systems, matter and energy, structures and mechanisms, and Earth and space systems, developing both scientific inquiry skills and foundational content knowledge. StudyPug provides clear video lessons, guided practice, and step-by-step explanations covering every strand so students can work at their own pace alongside their classroom learning.

Strands covered: life systems, matter and energy, structures and mechanisms, and Earth and space systems
Video lessons for every Grade 3 Ontario science topic
Practice problems and step-by-step explanations for each strand
Aligned to The Ontario Curriculum for Grade 3 science

Curriculum topics by strand

Find lessons and practice for every topic, organized by strand and aligned to The Ontario Curriculum.

Topic includes:

Practice

Video

Quiz

OE_ID

Expectations

StudyPug Topic

Ontario Grade 3 Science Topics

Life Systems: Students investigate the characteristics of living things, habitats, and the relationships between organisms and their environments.
Matter and Energy: Students explore the properties of liquids and solids, and investigate how materials change when energy is applied.
Structures and Mechanisms: Students examine how structures are built and how simple mechanisms work, connecting science to everyday objects.
Earth and Space Systems: Students learn about soils in the environment and how soil supports life, linking Earth science to the living world around them.

How StudyPug Helps Ontario Grade 3 Science Students

When a student gets stuck on a concept - whether it is understanding how a habitat works or why materials change state - they can search for that topic on StudyPug and find a focused video lesson paired with practice problems. Our grade 3 science help walks through each idea step by step, so students can build confidence before their next class.

Parents looking ahead can also explore the on grade 4 science curriculum to see what skills come next, or revisit the on grade 2 science curriculum to fill any gaps from the previous year.

Aligned to Ontario Grade 3 Science Curriculum

All StudyPug Grade 3 science content is built around The Ontario Curriculum strands and expectations, so every lesson your child watches and every problem they practice maps directly to what their teacher is covering in class.

Written by the StudyPug Science Team

Last updated June 5, 2026

3 M+

students

★★★★★

4.8 average

K-12

all grades