Interactive
CK-12 Foundation

Subtraction of Fractions: Fragmented Fractions

For Students 5th - 8th Standards
An interactive challenges scholars to subtract mixed numbers. Pupils answer questions—multiple-choice, fill in the blank, and true or false—with help from virtual fraction strips. The practice closes with a discussion. 
Worksheet
Curated OER

Spring Addition Sums 0-5

For Students Pre-K - K
Practice addition by counting animals associated with Spring to add sums up to five. One of the four equations requires students to create their own problem to solve.
Worksheet
Curated OER

Fun Math Worksheet 45

For Students 4th - 5th
In this finding the sums worksheet, students observe fun clip art and add five-digits plus five-digits numbers with regroupings. Students solve 15 problems.
Worksheet
Curated OER

Fun Math Worksheet 43

For Students 4th - 5th
In this finding the sums instructional activity, students observe fun clip art and add five-digits plus five-digits numbers with regroupings. Students solve 15 problems.
Worksheet
Curated OER

Adding Fractions

For Students 4th - 6th
All of these fraction pairs have common denominators, so adding them up is a bit simpler. There are two examples demonstrating both a mixed number and reducing to simplest terms. Scholars add up 28 fraction pairs, simplifying when...
Interactive
CK-12 Foundation

Multiplying Matrices by a Scalar

For Students 10th - 12th Standards
The rule is add before multiplying, even with matrices. Pupils use a slider to change the scalar multiplying the sum of two matrices. The interactive displays the resulting solution matrix, and requires scholars answer five questions...
Interactive
CK-12 Foundation

Vector Multiplied by a Scalar: Boat Race

For Students 11th - Higher Ed Standards
Find the right number of vectors to get to the finish line. Using a boat race scenario, pupils add multiples of the same vector together. The scholars use scalar multiplication to speed up the boats in an exciting race to the finish. 
Worksheet
Curated OER

Fractions

For Students 3rd - 5th
Give mathematicians 39 chances to practice adding fractions, most of which involve mixed numbers. There are three examples to get them started, and scholars should be encouraged to reduce answers when necessary. Not for beginners, these...
Interactive
CK-12 Foundation

Fraction and Mixed Number Comparison: Pumpkin Pie

For Students 6th
Compare fraction models to fractions on a number line in an interactive that uses pumpkin pies as the model. Pupils look at pumpkin pie models to determine their improper fraction value. They use their knowledge to answer five questions...
Interactive
CK-12 Foundation

Simplification of Radical Expressions: Irrational Garden Plot

For Students 8th - 10th
All is not simple in the garden of rationals and irrationals. Learners use a context of a garden to practice simplifying irrational numbers involving radicals. They also find areas of garden with irrational side lengths.
Worksheet
Math Doctor

Chapter 5: Decimal Notation

For Students 5th - 8th Standards
Explore all things decimal in this thorough series of introduction activities. Including scripting for the teacher and detailed descriptions and examples, the plan begins by reviewing the basics of place value and writing fractions as...
PPT
Curated OER

Addition with Regrouping

For Teachers 3rd
Now that your class can add, introduce them to adding with regrouping. This presentation provides several models that demonstrate what happens when you regroup. There are several examples and a few practice problems to complete as a class.
PPT
Curated OER

Making 10

For Teachers K - 1st
Brilliant! This presentation helps kids discover all the different way they can make 10. Each slide contains 10 balls, as the kids count, each ball blinks, and the number appears under them to show how many. A plus sign pops up and the...
PPT
Curated OER

Making 10 with animals

For Teachers K - 1st
Count the animals in each group and add to make the number 10. This slide show provides learners with the opportunity to see how many different way they can count on to make 10. Cute animals and large exciting number make this a great...
Lesson Plan
Curated OER

Two Digit Addition with Regrouping

For Teachers 1st - 3rd
Young scholars explore the concept of "regrouping." In this 2-digit addition with regrouping lesson, students create visual representations of combinations that equal ten using a tens frame. Young scholars use manipulatives to represent...
Worksheet
Curated OER

Adding Small Numbers

For Students K - 1st
In this adding small numbers worksheet, learners use objects to add numbers and choose the correct answer. In this multiple choice worksheet, students choose the correct sum.
Worksheet
Curated OER

Add and Compare enrichment 10.5

For Students 2nd - 3rd
In this addition worksheet, learners add the ones columns and fill in the carry squares, add the tens, then order the sums. Students solve ten problems.
Organizer
Curated OER

Arithmetic with Positive and Negative Numbers

For Students 6th - 9th
In this arithmetic with positive and negative numbers worksheet, students 5 multi-step problems.  Students find the sum of positive and negative integers.  Students practive multiplying and dividing positive and negative...
Worksheet
Curated OER

Santa's List Sums (C4)

For Students 3rd - 4th
In this addition worksheet, students add up the sums of the boys and girls in each column to come up with a total. Students add up 17 problems of adding four digit numbers to come up with a sum.
Worksheet
Curated OER

Let's Add

For Students K - 1st
In this math worksheet, students solve twelve addition problems. For each problem, students add a one-digit number to another one-digit number.
Worksheet
Math Mammoth

Add Like Fractions

For Students 5th - 6th
In this fraction addition worksheet, students learn to use shaded parts of a whole to help them add like fractions. Students write addition sentences and the answer in the first set. In the second set, students shade parts of the whole...
Worksheet
Curated OER

Adding: One-Digit Numbers

For Students Pre-K - 1st
In this adding worksheet, learners add two groups of single-digit numbers with pictures and record the sum in the blanks. Students solve six problems.
Lesson Plan
Curated OER

Even and Odd Numbers Closure Activity

For Teachers 1st - 2nd
Students practice the concept of mathematical closure as it relates to even and odd numbers. In this math instructional activity, students perform 4 different tasks to  understand the number closure concept. Students identify,...
Lesson Plan
Curated OER

Multiplying Decimals and Mixed Numbers

For Teachers 7th - 12th
Students practice multiplying decimals and/or mixed numbers, explore the effects of multiplying decimals and mixed numbers, and practice predicting the effects of multiplying a number by a decimal or mixed number.

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