# Category: K-5 Mathematics

Kindergarten, first, second, third, fourth, fifth grade math lessons, free online games & printable worksheets.

## Mental Math and Number Talk Resources (Frames, Dot Cards, Grids, Number Charts)

Mental Math and Number Talk Resources Grades K-2 Dot cards Dot Dominoes Dot Cards with Corresponding Digits 5, 10 , 20 Frames Blank Double 10 Frame Cards Filled 10 Frames – Large Number Cards with Corresponding Ten Frame Five Frames – Small Ten Frames 0-10 Filled Tens Frames and Some More 100 Grids Shaded 100 …

## Interactive Number Equivalency (2nd & 3rd Grade)

Second Grade Dream Box – Build Expressions Equal to Twenty. Using expressions that have one to three addends, this tool engages students in understanding various number pairs that equal up to twenty.  Lesson Dream Box – Build Expressions Equal to One Hundred.  Using expressions that have one to three addends, this tool engages students in understanding equivalence of …

## Teaching 3.OA.A.3 – Multiplication & Division within 100 to Solve Word Problems in Situations Involving Equal groups, Arrays, & Measurement Quantities

Operations & Algebraic Thinking – 3rd Grade Represent and solve problems involving multiplication and division. CCSS.Math.Content.3.OA.A.3 Use multiplication and division within 100 to solve word problems in situations involving equal groups, arrays, and measurement quantities, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem. Teacher Notes Drawings …

## Interactive Fractions and Decimals (4th Grade)

Dream Box – Equivalent Fractions on the Number Line.  Students develop understanding of equivalent fractions by placing markers at set intervals along a race course.  Lesson CCSS.MATH.CONTENT.4.NF.B.3.B Decompose a fraction into a sum of fractions with the same denominator in more than one way, recording each decomposition by an equation. Justify decompositions, e.g., by using a …

## Interactive Multi-Digit Multiplication Area Model (4th Grade)

Dream Box – Multiplication: Open Arrays/Area Models.  Students compose arrays, use partial products, and develop understanding of the distributive property to mentally multiply up to 3-digit by 3-digit numbers.  Lesson CCSS.MATH.CONTENT.4.NBT.B.5 Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place …

## Interactive Subtraction Algorithm (4th Grade)

Dream Box – Subtraction Algorithm.  Students use the standard subtraction algorithm and a place value workspace to solve subtraction problems involving up to two 3-digit numbers.  Lesson CCSS.MATH.CONTENT.4.NBT.B.4 Fluently add and subtract multi-digit whole numbers using the standard algorithm. Please follow and like us:

Dream Box – Adding Fractions.  Using both a concrete bar model and equations, this tool enables students to represent fraction addition and think strategically about which fractional pieces are best to solve a given problem. Lesson Dream Box – Subtracting Fractions.  Using the “removal” or “take away” representation, this tool helps your students learn to subtract …

## Interactive Division within 10,000 with Remainders (5th Grade)

Dream Box – Division within 10,000 with Remainders.  Students choose friendly equations (partial quotients) and the distributive property to solve multi-digit division problems within 10,000 and interpret remainders.  Lesson CCSS.MATH.CONTENT.5.NBT.B.6 Find whole-number quotients of whole numbers with up to four-digit dividends and two-digit divisors, using strategies based on place value, the properties of operations, and/or …