Grade 2

What they need to know

In math, students extend their understanding of place value to the hundreds place. They will use this to solve word problems, such as those involving length and other units of measure. Students will add and subtract numbers up to 20 and learn more about numbers up to 100. They will lay a foundation for fractions by working with shapes.

In English, students will think, talk, and write about what they read in a variety of texts, such as stories, books, articles, and other sources — including the Internet. In writing, students will learn how to develop a topic and strengthen their skills by editing and revising.

Math

• Quickly add numbers together that total up to 20 or less
• Solve one- or two-step word problems by adding or subtracting numbers up to 100
• Understand what the different digits mean in a three-digit number
• Add and subtract three-digit numbers
• Measure lengths of objects in standard units, such as inches and centimeters
• Solve addition and subtraction word problems involving length
• Solve problems involving money
• Break up a rectangle into same-size squares
• Divide circles and rectangles into halves, thirds, or fourths
• Solve addition, subtraction, and comparison word problems using information in a bar graph
• Write equations to represent addition of equal numbers

Sample task: Word problem

Julie has 35 books. Julie has 10 more books than Lucy. How many books does Lucy have? How many books do they have together?

Step 1: If Lucy has 10 fewer books than Julie, students first need to figure out what 10 less than 35 is.

Step 2: Students then have to add the number of books Julie has to the number of books Lucy has.

35 books + 25 books = 60 books

Place Value

Students learn that 250 = 2 hundreds and 5 tens, 25 tens, or 250 ones.

Students apply their understanding that 5 tens + 5 tens =10 tens, or 1 hundred, that can then be added to the hundreds place.

Classrom task: Carol's numbers

Carol has three number cards.

1. What is the largest three-digit number Carol can make with those cards?

2. What is the smallest three-digit number Carol can make with those cards?

3. Explain to Carol how she can make the smallest possible number.

Help kids learn outside school

• Play math games with your child. For example, "I'm thinking of a number. It has 5 tens, 3 hundreds, and 4 ones. What is the number? 354." Or, using a deck of cards, deal two cards and ask your child to add the two numbers. You can also identify a target number (20 or less) and ask your child to either add or subtract to get that number.
• Have your child explain the relationship between different numbers without counting. For example: 147 is 47 more than 100 and three less than 150.

English

Reading literature

• Retell stories and determine their central message, lesson, or moral.
• Recognize differences in the points of view of characters , such as speaking in a different voice for each character when reading dialogue aloud.

Reading for information

• Ask and answer such questions as who, what, where, when, why, and how to demonstrate understanding of key details in a text.
• Explain how specific images or illustrations (such as a diagram of how a machine works) are useful.

Writing

• Introduce a topic and use facts and definitions to develop points.
• Give a concluding statement or section.

Classroom task: Writing a report, "Where is Home?"

Students read about and discuss various communities — urban, suburban and rural — and write an "informational piece" about one that interests them. The report should group information into sections— such as "places to live," "jobs," "transportation" — with facts from the readings. It must include an introduction, table of contents, conclusion, and glossary of important words.

Answers

Carol's cards

1. 742

2. 247

3. Gives explanation, such as: "Put the smallest number on the left, then the next smallest number and the largest number last."

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