Science for Grade 3
1 Introduction to Science
1-1 Understanding the Nature of Science
1-2 Importance of Observation and Experimentation
1-3 Scientific Tools and Their Uses
2 Living Things and Their Habitats
2-1 Characteristics of Living Things
2-2 Classification of Living Things (Plants and Animals)
2-3 Habitats and Ecosystems
2-4 Adaptations of Living Things to Their Environment
3 Plants
3-1 Parts of a Plant and Their Functions
3-2 Types of Plants (Flowering and Non-flowering)
3-3 Plant Life Cycles
3-4 Importance of Plants to Living Things
4 Animals
4-1 Animal Classification (Vertebrates and Invertebrates)
4-2 Animal Life Cycles
4-3 Animal Behavior and Adaptations
4-4 Importance of Animals to Ecosystems
5 Human Body
5-1 Basic Parts of the Human Body
5-2 Functions of Major Body Systems (Skeletal, Muscular, Digestive, Respiratory)
5-3 Importance of Healthy Habits
5-4 Safety and First Aid Basics
6 Materials and Their Properties
6-1 Classification of Materials (Solids, Liquids, Gases)
6-2 Properties of Common Materials
6-3 Changes in Materials (Physical and Chemical Changes)
6-4 Recycling and Conservation of Materials
7 Forces and Motion
7-1 Understanding Forces (Push and Pull)
7-2 Types of Motion (Linear, Circular)
7-3 Simple Machines (Lever, Pulley, Inclined Plane)
7-4 Balanced and Unbalanced Forces
8 Energy and Its Forms
8-1 Sources of Energy (Renewable and Non-renewable)
8-2 Forms of Energy (Light, Heat, Sound, Electrical)
8-3 Energy Transformations
8-4 Conservation of Energy
9 Earth and Space
9-1 Structure of the Earth (Crust, Mantle, Core)
9-2 Weather and Climate
9-3 Earth's Resources and Their Uses
9-4 The Solar System and Beyond
10 Environmental Science
10-1 Importance of Biodiversity
10-2 Human Impact on the Environment
10-3 Conservation Efforts and Sustainable Practices
10-4 Global Environmental Issues (Pollution, Climate Change)
Understanding 3 Plants

Understanding 3 Plants

1. Sunflower

Sunflowers are large, bright yellow flowers that follow the sun from east to west during the day. They are known for their tall stems and large, round heads filled with seeds. Sunflowers are not only beautiful but also very useful. The seeds can be eaten, pressed for oil, and used in bird feeders. Sunflowers are also good at cleaning up polluted soil because their roots can absorb harmful chemicals.

Imagine a sunflower as a big, sunny smile in a garden. It always turns its face towards the sun, just like you might turn your face towards a bright light. This habit helps the sunflower grow tall and strong.

2. Cactus

Cacti are plants that live in very dry, hot places like deserts. They have special features that help them survive in these tough conditions. For example, cacti have thick, spiky leaves called spines that protect them from being eaten by animals and reduce water loss. They also store water in their thick stems, which helps them stay hydrated during long periods without rain.

Think of a cactus as a tough, water-saving superhero. Its spines are like armor, keeping it safe from harm, and its thick stem is like a water bottle, always ready to quench its thirst.

3. Bamboo

Bamboo is a fast-growing grass that can be found in many parts of the world. It is incredibly versatile and is used to make a variety of products, from furniture to musical instruments. Bamboo grows very quickly, sometimes as much as a meter in a single day! It has strong, hollow stems that are lightweight yet durable. Bamboo also helps prevent soil erosion because its extensive root system holds the soil in place.

Imagine bamboo as a tall, strong, and fast-growing friend. It can grow so quickly that you might see it getting taller right before your eyes. Its hollow stems are like tiny tunnels, making it light but strong, perfect for building things.