3rd grade Science
10 units matched to the Oregon State Standards.
Focus areas
- Forces and magnets
- Life cycles, traits and survival
- Weather and climate
Units
Unit 1
Pushes, Pulls & Forces
Forces as pushes and pulls, contact and non-contact forces (gravity, magnetism, static electricity), friction, how bigger forces change motion more, and helmets and seat belts as safety devices.
Learning standard: 3.PS2.1; 3.PS2.3 · balanced and unbalanced forces, and magnetic forces that act without touching
Unit 2
Speed & Motion
Practices speed as the distance an object travels in a certain time, inertia (objects keep doing what they are doing until a force acts), and how mass and force affect how quickly motion changes.
Learning standard: 3.PS2.1; 3.PS2.2 · how forces change motion and patterns that predict motion
Unit 3
How Plants Grow & Change
From seed to flower and back to seed, how seeds travel, how plants react to light and seasons, and how they use sunlight, water and carbon dioxide to make food and release oxygen.
Learning standard: 3.LS1.1 · the life cycle of flowering plants
Unit 4
Basic Needs & Life Cycles
Practices the basic needs of organisms (food, water, air, shelter) and the life cycles of plants and animals, including metamorphosis in butterflies and frogs.
Learning standard: 3.LS1.1 · life cycles of birth, growth, reproduction and death
Unit 5
Traits & Variation
Practices how plants and animals inherit traits from their parents, how traits vary within a family, and how the environment can change traits like size or health.
Learning standard: 3.LS3.1; 3.LS3.2 · traits are inherited from parents, vary within a group, and can be influenced by the environment
Unit 6
Surviving in a Habitat
Practices why some animals live in groups, how small differences in traits can help some individuals survive, and why some organisms do well in a habitat while others cannot survive there.
Learning standard: 3.LS2.1; 3.LS4.2; 3.LS4.3 · living in groups, trait differences that help survival, and how well organisms survive in a habitat
Unit 7
Weather Hazards & Solutions
Practices judging design solutions that reduce harm from weather hazards like floods, windstorms, lightning and snow, and solutions to problems when habitats change.
Learning standard: 3.ESS3.1; 3.LS4.4; 3.ETS1.2 · comparing solutions that reduce the impacts of weather hazards and environmental change
Unit 8
Fossils & Long Ago
Practices how fossils form and what they show about plants, animals and environments long ago, such as sea fossils found on dry land.
Learning standard: 3.LS4.1 · fossils as evidence of organisms and environments of long ago
Unit 9
Oregon Weather & Climate
Practices reading weather data for different seasons and comparing climates, from the rainy Oregon coast and Willamette Valley to the dry high desert east of the Cascades, and around the world.
Learning standard: 3.ESS2.1; 3.ESS2.2 · weather data for each season, and climates in different regions of the world
Unit 10
Magnet Inventions
Practices using what magnets do to solve simple design problems, such as a latch or a sorter, by setting criteria and constraints and running fair tests that change one thing at a time.
Learning standard: 3.PS2.4; 3.ETS1.1; 3.ETS1.3 · solving design problems with magnets, setting criteria and constraints, and running fair tests
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