If you're looking to build your learner's foundational science knowledge without spending 2–3 years working through the material, this two-semester guide offers a streamlined approach. Designed for lessons twice per week, it covers the core concepts in an engaging and manageable format.
Semester 1 — Weeks 1–15
Session
Lessons
Title(s)
Week 1A
Lesson 1
Organizing Things into Categories
Week 1B
Lesson 2
Solids, Liquids, and Gases
Week 2A
Lesson 4
States of Matter and Temperature Changes
Week 2B
Lesson 3
Gravity Introduction
Week 3A
Lesson 5
Orbits and Gravity in Space
Week 3B
Lesson 6
What is Energy?
Week 4A
Lesson 8
Energy Transformation
Week 4B
Lessons 7 + 9
Air is Real / Air and the Atmosphere
Week 5A
Lesson 10
Distinguishing Living and Nonliving Things
Week 5B
Lessons 11 + 13
Matter is Made of Particles / Changes in Particles
Week 6A
Lesson 12
Light and Shadows
Week 6B
Lessons 14 + 15
Technology, Tools, and the Engineering Process / Reversible and Nonreversible Changes
Week 7A
Lesson 16
Sound and Vibrations
Week 7B
Lesson 18
How Sound and Light Travel in Waves
Week 8A
Lessons 17 + 20
Kinetic and Potential Energy / Energy in the Natural World
Week 8B
Lessons 19 + 22
Plants vs Animals / Weather and the Water Cycle
Week 9A
Lessons 21 + 23
Categories of Materials / Properties of Different Materials
Week 9B
Lesson 24
The Life Cycle Concept
Week 10A
Lesson 26
Metamorphosis and Life Cycles
Week 10B
Lessons 25 + 27
Understanding Force / How Force and Energy Work Together
Week 11A
Lessons 28 + 30
Animal Adaptations / Food Chains and Energy Flow
Week 11B
Lesson 29
Reading and Drawing Maps
Week 12A
Lesson 31
Matter vs Energy
Week 12B
Lessons 32 + 34
Identifying Local Plants and Animals / Habitats
Week 13A
Lesson 33
Air Pressure
Week 13B
Lessons 37 + 40
Pressure Inside and Outside / Vacuums and Suction
Week 14A
Lesson 35
Day, Night, and Earth's Rotation
Week 14B
Lessons 36 + 39
Compass Directions / Maps and Real-World Directions
Week 15A
Lesson 38
Properties of Magnets
Week 15B
Lessons 41 + 43
Magnetic Fields / Earth as a Magnet
Semester 2 — Weeks 16–30
Session
Lessons
Title(s)
Week 16A
Lessons 42 + 44
What Is a Species? / Variation Within a Species
Week 16B
Lesson 45
Clouds and Weather Patterns
Week 17A
Lesson 46
Adaptations for Survival
Week 17B
Lesson 47
Air as a Mixture of Gases
Week 18A
Lessons 49 + 51
Mixtures vs Chemical Reactions / Respiration, Photosynthesis, and Air
Week 18B
Lesson 48
Earth's Landforms
Week 19A
Lessons 57 + 59
Biomes and Climate / Simple Machines and Work
Week 19B
Lesson 50
Basic Plant Structure
Week 20A
Lessons 52 + 54
How Plants Function / Plant Reproduction and Seeds
Week 20B
Lessons 53 + 55
Evaporation / Condensation and the Water Cycle
Week 21A
Lessons 56 + 58
Seeds and Germination / Seedling Growth and Plant Responses
Week 21B
Lesson 60
Plants, Soil, and Erosion
Week 22A
Lesson 84
Time, Sundials, and Earth's Rotation
Week 22B
Lesson 61
Earth's Orbit and Seasons
Week 23A
Lesson 62
Dissolving and Solutions
Week 23B
Lessons 66 + 68
Solubility / Crystallization
Week 24A
Lessons 63 + 69
Introduction to Inertia / Inertia and Energy
Week 24B
Lessons 76 + 82
Introduction to Friction / Friction, Heat, and Energy Loss
Week 25A
Lesson 86
Air and Water Resistance
Week 25B
Lesson 65
How Fast Things Fall
Week 26A
Lessons 70 + 73
Weightlessness and Free Fall / Mass vs Weight
Week 26B
Lesson 75
Action and Reaction Forces
Week 27A
Lessons 64 + 67
The Skeleton and How It Works / How Muscles Move the Body
Week 27B
Lessons 71 + 74
Vertebrates and Internal Skeletons / Arthropods and External Skeletons
Week 28A
Lesson 72
Nervous System and Movement
Week 28B
Lessons 79 + 88
The Digestive System / Body Systems and Energy
Week 29A
Lessons 77 + 80 + 83
Rocks and Minerals / Crystals and Mineral Structure / Soil Composition
Week 29B
Lessons 78 + 81
Erosion, Sediment, and Fossil Formation / Limestone and Fossils
Week 30A
Lessons 85 + 87
Sedimentary vs Igneous Rock / Rock Layers and Earth's History
Week 30B
Lessons 89 + 90
Introduction to Resources / Human Resources and Resource Limits