Grade 1
  1. Numbers and Counting  1.1. Counting to 10  1.2. Counting to 20  1.3. Counting to 50  1.4. Counting to 100  1.5. Writing Numbers 1 to 10  1.6. Writing Numbers 1 to 20  1.7. Writing Numbers 1 to 50  1.8. Writing Numbers 1 to 100  1.9. Reading Numbers 1 to 10  1.10. Reading Numbers 1 to 20  1.11. Reading Numbers 1 to 50  1.12. Reading Numbers 1 to 100  1.13. Comparing Numbers  1.14. Ordering Numbers  1.15. Odd and Even Numbers  1.16. Number Patterns  1.17. Skip Counting by 2s, 5s, and 10s  1.18. Understanding Zero
  2. Basic Addition and Subtraction  2.1. Understanding Addition  2.2. Addition Facts within 10  2.3. Addition Facts within 20  2.4. Adding Zero  2.5. Adding One More  2.6. Adding Two More  2.7. Adding Three More  2.8. Adding Using Pictures  2.9. Addition Word Problems  2.10. Understanding Subtraction  2.11. Subtraction Facts within 10  2.12. Subtraction Facts within 20  2.13. Subtracting Zero  2.14. Subtracting One  2.15. Subtracting Two  2.16. Subtraction Using Pictures  2.17. Subtraction Word Problems  2.18. Introduction to Doubles Facts  2.19. Introduction to Making 10
  3. Place Value and Number Sense  3.1. Understanding Tens and Ones  3.2. Counting by Tens  3.3. Place Value within 20  3.4. Place Value within 50  3.5. Place Value within 100  3.6. Reading and Writing Two-Digit Numbers  3.7. Comparing Two-Digit Numbers  3.8. Decomposing Numbers
  4. Measurement  4.1. Length  4.1.1. Comparing Lengths  4.1.2. Measuring with Non-Standard Units  4.1.3. Using Standard Units (Inches and Centimeters) in Length  4.2. Weight  4.2.1. Comparing Weights  4.2.2. Heavy and Light Objects  4.2.3. Introduction to Grams and Pounds  4.3. Capacity  4.3.1. Comparing Capacity  4.3.2. Full and Empty  4.3.3. Introduction to Liters and Milliliters  4.4. Time  4.4.1. Telling Time to the Hour  4.4.2. Telling Time to the Half Hour  4.4.3. Days of the Week  4.4.4. Months of the Year  4.4.5. Understanding Yesterday, Today, and Tomorrow  4.5. Money  4.5.1. Recognizing Coins  4.5.2. Counting Coins  4.5.3. Introduction to Dollar and Cents Symbols  4.5.4. Simple Addition and Subtraction with Money
  5. Geometry  5.1. 2D Shapes  5.1.1. Recognizing 2D Shapes  5.1.2. Drawing 2D Shapes  5.1.3. Naming 2D Shapes  5.1.4. Properties of 2D Shapes  5.1.5. Sorting 2D Shapes  5.1.6. Composing Simple Shapes  5.2. 3D Shapes  5.2.1. Recognizing 3D Shapes  5.2.2. Naming 3D Shapes  5.2.3. Properties of 3D Shapes  5.2.4. Sorting 3D Shapes  5.3. Position and Direction  5.3.1. Left and Right  5.3.2. Above and Below  5.3.3. Inside and Outside  5.3.4. Near and Far  5.3.5. In Front and Behind
  6. Patterns and Sorting  6.1. Recognizing Patterns  6.2. Extending Patterns  6.3. Creating Patterns  6.4. Sorting by Color  6.5. Sorting by Shape  6.6. Sorting by Size
  7. Data and Graphing  7.1. Introduction to Data  7.2. Collecting Data  7.3. Tally Marks  7.4. Bar Graphs  7.5. Picture Graphs  7.6. Interpreting Simple Graphs
  8. Fractions  8.1. Understanding Halves  8.2. Understanding Fourths  8.3. Dividing Shapes into Equal Parts  8.4. Identifying Equal and Unequal Parts

Grade 1 ↓


Measurement


Measurement is an essential concept in math and everyday life. It helps us understand and describe the world around us, from how long a book is to how much water is in a cup. In Grade 1, students begin to explore the basic ideas of measurement, which are easy to understand when explained simply and clearly. Let's dive into the fascinating world of measurement and see what young learners should know!

What is measurement?

Basically, measurement is the process of determining how much of something there is. We do this by comparing things to a specific standard or unit. The main elements of measurement include understanding the length, weight, and volume of objects. In Grade 1, students begin learning these concepts using simple activities and relatable examples.

Understanding length

Length is how long something is from one end to the other. For example, the length of a pencil is determined by measuring from the eraser to the tip. We can use a ruler, tape measure, or any consistent unit to determine length. Grade 1 students often use non-standard units first, such as paper clips or blocks.

To understand length better, let's look at the following example. Suppose we have three pencils, and we want to measure their length using blocks. We place each pencil next to a row of blocks to find out how many blocks long each pencil is.

Pencil A: 6 blocks long
Pencil B: 4 blocks long
Pencil C: 5 blocks long

In this example, pencil A is the longest, and pencil B is the shortest. Students learn to compare lengths visually and through counting.

Visual example:

Pencil A Pencil B Pencil C

Learning about height

Height is similar to length, but usually means how tall something is. For example, we use the concept of height to say that a tree is tall or a person is short. In learning height, children can place objects higher or lower.

Introduction to weight

Weight tells us how heavy or light something is. In the classroom, students can use a balance scale to compare the weight of different objects. They learn to understand weight by feeling objects and seeing which object goes down on one side of the balance scale.

Example:

Suppose we have two apples and three blocks. We use a scale to determine which one is heavier.

Apple Blocks

When students see which side goes down, they know which one is heavier. They soon learn that weight is something we can measure with standard units like grams and kilograms, although in Grade 1, the focus remains on comparisons and observations.

Understanding volume

Volume is how much space something takes up. For example, students begin to explore volume when they pour water from a small cup into a larger cup. By using different sized containers, they see how many small cups are filled into one large cup.

Activity example:

Give students several different containers and a small cup. Ask them to pour water from the cup into each container to see how many cups fit:

Container 1: 4 small cups
Container 2: 2 small cups
Container 3: 5 small cups

Through this activity, students can visualize and understand that different containers have different volumes.

Non-standard units

Students use non-standard units to measure things before they understand standard units such as metres or kilograms. Non-standard units include everyday objects such as hands, feet, blocks or paper clips.

Example activities using non-standard units:

1. Measuring a book with a paper clip.

Book

Here, the book is 7 paper clips long.

2. Measuring the length of the table with hand or foot.

Encourage students to line up their hands or feet along the length of the table and count how many hands or feet it takes to reach from one end to the other.

Using standard units

After becoming familiar with non-standard units, students are gradually introduced to standard units of measurement. For example:

  • Length: meter, centimeter
  • Weight: grams, kilograms
  • Volume: liters

Although Grade 1 mainly uses non-standard units, knowing the names of standard units lays the foundation for advanced study of measurement.

Fun activities to reinforce measurement concepts

Interesting activities can enhance understanding. Consider:

Activity: Length search search

Ask students to find objects in the classroom that are shorter, longer, and about the same length as a pencil. They will learn to estimate and compare lengths.

Activity: Weight estimation

Present different objects and ask students to guess which object is heavier or lighter. Use a scale to check their guesses.

Activity: Measuring liquids

Use cups, spoons, and containers to practice filling and pouring. Students learn through practical experience with liquid volumes.

Understanding time as a measurement

Although the focus is primarily on physical characteristics, it is also beneficial for students to learn about time and how it can be measured. Introducing clocks and explaining the basics of hours and minutes will help them understand time as a form of measurement.

Visual representation of the clock:

12 3 6 9

Tell the time by looking at the direction of the hands. This helps children learn about measuring time, which is an important life skill.

Conclusion

Understanding measurement is important for everyday life. In Grade 1, students begin with the basics of measurement, using fun activities and visual aids to understand concepts such as length, weight, volume, and time. These foundational skills help children understand the world around them, as well as prepare for the use of standard measurement units. With simple, hands-on experiences, students develop an intuitive understanding of measurement that they will carry with them as they move forward in their academic journey.


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Measurement

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