Science for Grade 1
1 Introduction to Science
1-1 What is Science?
1-2 Importance of Science in Daily Life
1-3 Basic Scientific Tools and Equipment
2 Observing and Describing
2-1 Observing Objects and Events
2-2 Describing Objects Using Senses
2-3 Recording Observations
3 Classifying and Grouping
3-1 Understanding Classification
3-2 Grouping Objects Based on Similarities
3-3 Using Classification Keys
4 Measuring and Comparing
4-1 Introduction to Measurement
4-2 Measuring Length, Weight, and Volume
4-3 Comparing Measurements
5 Exploring Materials and Substances
5-1 Identifying Common Materials
5-2 Properties of Materials (e g , hardness, flexibility)
5-3 Changes in Materials (e g , melting, dissolving)
6 Investigating Forces and Motion
6-1 Understanding Forces
6-2 Observing Motion
6-3 Simple Machines (e g , lever, pulley)
7 Exploring Living Things
7-1 Identifying Plants and Animals
7-2 Basic Needs of Living Things
7-3 Life Cycles of Plants and Animals
8 Understanding the Environment
8-1 Ecosystems and Habitats
8-2 Interactions Between Living Things and the Environment
8-3 Importance of Biodiversity
9 Weather and Climate
9-1 Observing Weather Patterns
9-2 Understanding Climate
9-3 Weather Instruments and Their Use
10 Safety in Science
10-1 Importance of Safety in Science Experiments
10-2 Handling Equipment Safely
10-3 Emergency Procedures in the Science Lab
Introduction to Measurement

Introduction to Measurement

1. What is Measurement?

Measurement is finding out how big, how long, or how heavy something is. It helps us understand the size and weight of objects. For example, when you measure your height, you are finding out how tall you are.

2. Units of Measurement

Units of measurement are the standard amounts we use to measure things. For example, centimeters (cm) are used to measure small lengths, like the length of a pencil. Kilograms (kg) are used to measure weight, like how much a bag of apples weighs.

Example: If you measure a pencil and find it is 15 cm long, you are using centimeters as the unit of measurement.

3. Tools for Measurement

Tools help us measure things more accurately. For example, a ruler is used to measure length, a scale is used to measure weight, and a clock is used to measure time. These tools make it easier to find out exactly how big or heavy something is.

Example: To measure the length of a table, you would use a ruler or a tape measure. To find out how much a toy car weighs, you would use a scale.

4. Importance of Measurement

Measurement is important because it helps us understand the world better. It helps us build things, cook food, and even play games. For example, when you bake a cake, you need to measure the ingredients to make sure the cake turns out right. When you play a game, you might measure how far you can throw a ball.

Example: If you want to build a tower with blocks, you need to measure the height of each block to make sure the tower is stable. If you measure the height of each block and find they are all the same, your tower will be strong.