Code 
Standard 
Lessons 
Worksheets 
Games 
4.OA.A.1 
Interpret a multiplication equation as a comparison, e.g., interpret 35 = 5 × 7 as a statement that 35 is 5 times as many as 7 and 7 times as many as 5. Represent verbal statements of multiplicative comparisons as multiplication equations. 

4.OA.A.2 
Multiply or divide to solve word problems involving multiplicative comparison, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem, distinguishing multiplicative comparison from additive comparison. 

4.OA.A.3 
Solve multistep word problems posed with whole numbers and having wholenumber answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding. 

4.OA.B.4 
Find all factor pairs for a whole number in the range 1 100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1 100 is a multiple of a given onedigit number. Determine whether a given whole number in the range 1 100 is prime or composite. 
Prime numbers up to 20 

4.OA.C.5 
Generate a number or shape pattern that follows a given rule. Identify apparent features of the pattern that were not explicit in the rule itself. For example, given the rule ԁdd 3Ԡand the starting number 1, generate terms in the resulting sequence and observe that the terms appear to alternate between odd and even numbers. Explain informally why the numbers will continue to alternate in this way. 
Code 
Standard 
Lessons 
Worksheets 
Games 
4.NBT.A.1 
Recognize that in a multidigit whole number, a digit in one place represents ten times what it represents in the place to its right. For example, recognize that 700 ÷ 70 = 10 by applying concepts of place value and division. 
Multiplication Equation 10 times Value 

4.NBT.A.2 
Read and write multidigit whole numbers using baseten numerals, number names, and expanded form. Compare two multidigit numbers based on meanings of the digits in each place, using >, =, and < symbols to record the results of comparisons. 

4.NBT.A.3 
Use place value understanding to round multidigit whole numbers to any place. 

4.NBT.B.4 
Fluently add and subtract multidigit whole numbers using the standard algorithm. 

4.NBT.B.5 
Multiply a whole number of up to four digits by a onedigit whole number, and multiply two twodigit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models. 
Multiply 2digit by 1digit 

4.NBT.B.6 
Find wholenumber quotients and remainders with up to fourdigit dividends and onedigit divisors, using strategies based on place value, the properties of operations, and/or the relationship between multiplication and division. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models. 
Divide 2digit by 1digit 
Code 
Standard 
Lessons 
Worksheets 
Games 
4.NF.A.1 
Explain why a fraction a/b is equivalent to a fraction (na)/(nb) by using visual fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size. Use this principle to recognize and generate equivalent fractions. 
Equivalent Fractions 

4.NF.A.2 
Compare two fractions with different numerators and different denominators, e.g., by creating common denominators or numerators, or by comparing to a benchmark fraction such as 1/2. Recognize that comparisons are valid only when the two fractions refer to the same whole. Record the results of comparisons with symbols >, =, or <, and justify the conclusions, e.g., by using a visual fraction model. 
Compare Fractions 

4.NF.B.3 
Understand a fraction a/b with a >
1 as a sum of fractions 1/b. 
Add,
Subtract & Decompose Fractions 
Fraction Worksheets 

4.NF.B.3c 
C. Add and subtract mixed numbers with like denominators, e.g., by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction. 
Convert improper fractions to mixed
numbers 

4.NF.B.3d 
D. Solve word problems involving addition and subtraction of fractions referring to the same whole and having like denominators, e.g., by using visual fraction models and equations to represent the problem. 
Adding and subtracting fractions with
like denominators word problems 

4.NF.B.4 
Apply and extend previous understandings of
multiplication to multiply a fraction by a whole number. 
Multiply Fractions & Whole Numbers 

4.NF.C.5 
Express a fraction with denominator 10 as an equivalent fraction with denominator 100, and use this technique to add two fractions with respective denominators 10 and 100. For example, express 3/10 as 30/100, and add 3/10 + 4/100 = 34/100. 
Add fractions with denominators 10 and 100 

4.NF.C.6 
Use decimal notation for fractions with denominators 10 or 100. For example, rewrite 0.62 as 62/100; describe a length as 0.62 meters; locate 0.62 on a number line diagram. 
Converting decimals to fractions 
Decimal Games  
4.NF.C.7 
Compare two decimals to hundredths by reasoning about their size. Recognize that comparisons are valid only when the two decimals refer to the same whole. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions, e.g., by using a visual model. 
Decimal Games 
Code 
Standard 
Lessons 
Worksheets 
Games 
4.MD.A.1 
Know relative sizes of measurement units within one system of units including km, m, cm; kg, g; lb, oz.; l, ml; hr, min, sec. Within a single system of measurement, express measurements in a larger unit in terms of a smaller unit. Record measurement equivalents in a twocolumn table. For example, know that 1 ft is 12 times as long as 1 in. Express the length of a 4 ft snake as 48 in. Generate a conversion table for feet and inches listing the number pairs (1, 12), (2, 24), (3, 36), ... 
Metric Length Conversion 

4.MD.A.2 
Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. Represent measurement quantities using diagrams such as number line diagrams that feature a measurement scale. 
Customary unit word problems 

4.MD.A.3 
Apply the area and perimeter formulas for rectangles in real world and mathematical problems. For example, find the width of a rectangular room given the area of the flooring and the length, by viewing the area formula as a multiplication equation with an unknown factor. 
Calculate Area & Perimeter 

4.MD.B.4 
Make a line plot to display a data set of measurements in fractions of a unit (1/2, 1/4, 1/8). Solve problems involving addition and subtraction of fractions by using information presented in line plots. For example, from a line plot find and interpret the difference in length between the longest and shortest specimens in an insect collection. 

4.MD.C.5 
Recognize angles as geometric shapes that are formed
wherever two rays share a common endpoint, and understand
concepts of angle measurement: 
Understanding angles 

4.MD.C.6 
Measure angles in wholenumber degrees using a protractor. Sketch angles of specified measure. 

4.MD.C.7 
Recognize angle measure as additive. When an angle is decomposed into nonoverlapping parts, the angle measure of the whole is the sum of the angle measures of the parts. Solve addition and subtraction problems to find unknown angles on a diagram in real world and mathematical problems, e.g., by using an equation with a symbol for the unknown angle measure. 
Code 
Standard 
Lessons 
Worksheets 
Games 
4.G.A.1 
Draw points, lines, line segments, rays, angles (right, acute, obtuse), and perpendicular and parallel lines. Identify these in twodimensional figures. 
Angle types 

4.G.A.2 
Classify twodimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size. Recognize right triangles as a category, and identify right triangles. 

4.G.A.3 
Recognize a line of symmetry for a twodimensional figure as a line across the figure such that the figure can be folded along the line into matching parts. Identify linesymmetric figures and draw lines of symmetry. 
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