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- CURRICULUM
- Youth English
- Adult English

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- Teacher Member
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- Contact Us

Let’s Read English **mathematics curriculum** is offered for students in preschool to twelfth grade. Parents can view subjects covered in the curriculum, such as recognize transformations and symmetry, present fractions, problem-solving, and more.

The complete lesson plans outlined below present a detailed list of the third-grade mathematics curriculum from Let’s Read English.

Members frequently use this article as a resource for more thorough planning as a guide to help them choose particular activities by using the activity finder or differentiate our curriculum with state standards and online schooling laws.

- Comprehensive mathematics curriculum for first grade consists of 18 chapters, over 285 activities, worksheets, ad quizzes.
- Chapter lessons with thorough descriptions of content are included.
- Several types of activity to promote skill mastery, such as non-scored activities, quizzes, and printable quiz answer keys.
- Lesson worksheets and answer keys that cover the materials presented.
- Accessible to extra chapters within every subject.
- Students will get involved in learning mathematics fundamentals with LREMathFacts which uses interesting games.

**Students who signed up for the first-grade mathematics program from Let’s Read English** will access both second-grade and fourth-grade lessons as part of their memberships. It allows them to progress at their own pace.

Chapter 1: “Number Theory and Systems”

Convert numbers containing two to six digits from standard form to expanded form and vice versa.

Write numbers up to six digits using oral and written cues.

Order numbers up to six digits and compare numbers using the symbols <, >, and =.

Round numbers up to the ten-thousands to the nearest ten. Use number lines and knowledge of place value.

Round numbers up to the ten-thousands to the nearest hundred. Use number lines and knowledge of place value.

Round numbers to the nearest ten, to the nearest hundred, and to the nearest thousand.

Chapter 2: “Addition and Subtraction”

Add three or more single digit addends. (grouping property) Add 2- and 3-digit numbers. (with and without regrouping)

Subtract 2-and 3-digit numbers. (with regrouping) Subtract 2- and 3-digit numbers when minuend has multiple zeros. (with regrouping)

Estimate sums and differences using rounding.

Chapter 3: “Multiplication and Division”

An introduction to multiplication (0-12 x 0-12) including multiplication by 0 and 1, using arrays and tables.

Define and list multiples of a given number (1-10). Explore multiplication as repeated addition and arrays.

Multiply two whole numbers with and without regrouping in which one factor is a one-digit number and the other is a 2-digit number. Multiply mentally by 10, 100, and 1000.

Multiply one-digit whole numbers by multiples of 10 in the range 10 – 90 using strategies based on place value and properties of operations.

An introduction to simple division problems including divisions involving 0 and 1 and divisions involving remainders using tables and other manipulatives.

Recognize and use basic division facts to 100 ÷ 10, and identify dividend, divisor, and quotient. Describe these division properties: you cannot divide by 0, and any number divided by 1 equals that number.

Represent and solve problems involving division. Interpret quotients of whole number as the either the number of objects in each share when objects are partitioned equally, or as the number of shares.

Represent and solve problems involving division. Use division within 100 to solve word problems in situations involving equal groups by using drawings and equations with a symbol for the unknown number to represent the problem.

Divide two-digit dividends by one-digit divisors, with and without remainders.

Chapter 4: “Number Patterns”

Identify arithmetic patterns using an addition table.

Identify arithmetic patterns using a multiplication table, and explain them using properties of operations.

Chapter 5: “Multiplication and Division Problem Solving”

Solve a multi-step word problem using multiplication and division.

Understand division as an unknown-factor problem.

Understand multiplication and use strategies to fluently multiply within 100.

Understand division and use strategies to fluently divide within 100.

Chapter 6: “Fractions”

Recognize fractions as part of a whole and understand the meaning of the numerator and the denominator.

Identify the fraction shown by a point on a number line and learn how to place a fraction on a number line.

Understand two fractions as equivalent if they are the same size, or the same point on a number line.

Compare two fractions with the same numerator or the same denominator using fraction models.

Chapter 7: “Fractions and Decimals”

Identify parts of a set and parts of a whole with equivalent fractions with denominators up to 10.

Identify equivalent fractions. (1/2 = 2/4)

Order fractions with like denominators and compare fractions using the symbols <, >, and =.

Explore the relationship between fractions and decimals. (tenths and hundredths)

Identify decimals to the hundredths place. Read and write decimals to the hundredths.

Order decimals to the hundredths place, and compare decimals using the symbols <, >, and =.

Chapter 8: “Money”

Count collection of coins and bills up to $50. Add and subtract dollar amounts. (dollar and cents)

Solve word problems that involve the value of coins, bills, and making change.

Solve problems involving unit price of items.

Chapter 9: “Patterns”

Identify and extend repeating patterns and apply pattern rules using shapes, colors and numbers.

Identify and extend patterns and apply pattern rules using a sequence of related numbers.

Apply the appropriate rule to complete a chart including input/output tables.

Chapter 10: “Algebra”

Represent and evaluate written relationships as numeric expressions.

Determine the unknown whole number in a multiplication equation relating three whole numbers.

Determine the unknown whole number in a division equation relating three whole numbers.

Solve for an unknown quantity in an equation. Example: 3 + __ = 7.(Example: missing addend or missing factor)

Understand properties of multiplication and apply these properties as strategies to multiply.

Understand properties of division and apply these properties as strategies to divide.

Use the Order (Commutative) and Grouping (Associative) Properties of Addition and Multiplication to find equivalent expressions or equations containing an unknown quantity.

Chapter 11: “Properties of Shapes”

Describe line segments, lines, and line pairs.

Identify and classify angles as right, acute, or obtuse.

Identify the attributes of polygons (sides and angles) and sort by particular characteristics of the plane figure.

Identify the attributes of solid figures (edges, vertices, and faces) such as cubes, rectangular prisms, rectangular pyramids, cones, cylinders, and spheres and sort by particular characteristics.

Identify and create a two-dimensional representation of a three-dimensional figure.

Chapter 12: “Coordinate Geometry”

Find the horizontal or vertical distance between two points on a coordinate grid.

Plot a point on a coordinate grid given an ordered pair and write the ordered pair of a point shown on a coordinate grid.

After being given navigational directions from the initial point, identify the ordered pair of the final point.

Chapter 13: “Transformations and Symmetry”

Given a plane figure, identify the congruent shape and create a congruent shape using other plane figures.

Apply a slide, flip, or turn to a plane figure and predict the result. Identify the image of a plane figure as a slide, flip, or turn.

Use line and point symmetry to identify and create symmetrical figures.

Chapter 14: “Time”

Define, tell, and show time to the hour, half hour, and quarter hour. Define, tell, and show time to the 5 and 1 minute intervals.

Find elapsed time using minutes, hours, days, and weeks. Develop measuring skills and demonstrate understanding of concepts related measuring time.

Solve problems of elapsed time using a number line.

Interpret time schedules using minutes, hours, days, and weeks.

Chapter 15: “Customary System”

Define units of length. (inch, foot, yard, mile) Estimate and compare length. Measure to the nearest half-inch.

Define units of capacity. (cup, pint, quart, gallon) Estimate and compare capacity.

Define units of weight. (ounce, pound) Estimate and compare weight.

Read thermometer to nearest 5-degree interval.

Chapter 16: “Metric System”

Define units of length. (centimeter, decimeter, meter) Estimate and compare length. Measure to the nearest centimeter.

Define units of capacity. (milliliters, liters) Estimate and compare capacity.

Define units of mass. (grams, kilograms) Estimate and compare mass.

Read thermometer to nearest 5-degree interval.

Chapter 17: “Solving Problems Involving Volume and Mass”

Estimate volumes of objects in liters and milliliters by comparing to benchmark objects.

Solve real-world problems involving mass in kilograms and grams, and volume in liters.

Chapter 18: “Area”

Measure the area of a rectangle using unit squares.

Find the area of a figure by counting unit squares.

Find the area of a rectangle by tiling and by multiplying the side lengths.

Interpret y = mx + b as a linear function.

Find the area of a rectangle by multiplying the length and width.

Find the area of a rectangle by dividing it into two smaller rectangles.

Find area by decomposing composite shapes into rectangles and adding the areas.

Chapter 19: “Perimeter and Area”

Find perimeter by counting units and by adding lengths. Measure to find the perimeter. Select appropriate label for measurement.

Find area by counting units. Multiply to find area. Select appropriate labels of measurement.

Compare perimeter and area.

Chapter 20: “Display and Interpret Data”

Display and interpret data in pictographs.

Display and interpret data in vertical and horizontal bar graphs.

Display and interpret data in tables including tally, data, and frequency tables.

Display and interpret data in frequency tables using two attributes.

Chapter 21: “Probability”

Determine the certainty, likelihood, and fairness of events.

Determine and list all the possible outcomes of an event.

Chapter 22: “Problem-Solving”

Use Polya’s four-step method to solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown.

Solve two-step word problems using the four operations. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.

The lesson activity finder tool is one of the numerous useful tools that Let’s Read English provides for members. The activity finder is an alternative route for parents to preview lessons or find additional practices for their children easily.

Each lesson in the curriculum has a rare activity number referred to in the lesson plans as an “LA Number.” These numbers can be detected either on the scope and sequence pages or the lesson plans in the Parent Dashboard.

You can find the activity finder in the lower left-hand corner of the Student Dashboard. To use the activity finder, members can log in to their children’s account, type the Learning Activity (LA) number of a lesson into the Activity Finder, and then click “Go” to open it.

Please check our hints and help section for more information which provides more details about the activity finder.

- Third Grade Science Activities. Use our free printable worksheet to share with your students.
- Third Grade Reading Program
- Third Grade Language Arts Lesson Plans
- Third Grade Spelling Words and Vocabulary Lists
- Third Grade writing standards with Let’s Write English
- Our lesson planning worksheet can help you evaluate how many lessons your children should study every day.

If you are learning about Let’s Read English, you are recommended to take a look at our interactive lesson demos.

Sign up for Let’s Read English and access various educational materials that will involve and challenge your children to succeed. Make Let’s Read English as a part of their online school resources.