Illustrative Mathematics
Building toward fluency
Here is a great learning task that focuses on the development of areas in computational fluency including strategies in mental math. Young learners are guided through a list of addition expressions that help them visually understand the...
Curated OER
Adding in Our Heads
A good presentation on adding two-digit numbers. Learners are shown how to partition the numbers before trying to add them in their heads. A frog is the featured teacher of the PowerPoint, and he leads viewers through many problems and...
DK Publishing
Addition: Count and Color, part 2
Introduce young counters to addition through coloring as they examine number sentences represented by sets of objects. Learners count the two addends and color in the sum by counting out the total in a final set. There is an example, and...
DK Publishing
Addition Practice #2
Encourage young scholars to tap into their inner math-whiz as they add three and four-addend equations. The first 36 problems each have three addends (none over two-digit), and are written horizontally. Next, they complete eight more...
Benjamin Franklin High School
Saxon Math: Algebra 2 (Section 9)
Section 9 of the 12 linked Saxon Math sections introduces the young algebrist to graphing periodic functions, creating graphs from quadratic roots, working with inequalities, and rational equations. Common among all the lessons is the...
Curated OER
Addition Drills, part 2
Add them up! Scholars add up double-digit addends to find sums for 32 equations. There are three examples learners can reference if needed, and they have to regroup for many of these. The equations aren't numbered, so consider doing this...
Curated OER
Addition Drills, part 4
Show kids that addition has real-life applications as they add up measurements and money. There are some examples here demonstrating regrouping and including units in an answer. They complete 20 measurement addition problems, each with...
Curated OER
Developing Strategies for Addition and Subtraction
Primary graders develop strategies to assist them with addition and subtraction. They discover number combinations and numerical facts which enable them to add and subtract more effectively. Young scholars use these techniques to...
Curated OER
And 1 More Makes...
If we add one more, how many will we have? Beginners to addition practice this skill using images and counting as they draw one more sock to each set and record the new total. There are three of these followed by four more similar...
Curated OER
Estimate and Compare Data
Seventh graders explore the values that are used in order to describe data that is collected or given. They compare data using the statistical analysis provided by finding the mean, median, and range.
Curated OER
Integers - Objects Model
Sixth and seventh graders solve 19 various types of problems related to integers as objects models. They write an integer that corresponds to each letter on a number line and then, arrange the integers from least to greatest. Pupils also...
Curated OER
Counting On Tens or Ones
In this mathematics worksheet, 1st graders count on tens or ones. They identify how many ones and tens that they are counting for each. Then, students write the sum for each problem.
Curated OER
Adding With Whole Tens
In this addition worksheet, students use pictures of bars and numeric problems to add whole tens and complete addition problems. A website reference is given for additional activities.
Curated OER
Same and Different
For this mathematics activity, students first complete the tens place and then add the rest. Then they continue the patterns and compare each column. Students also fill in the missing addends and solve various word problems by writing a...
Curated OER
Christmas Doubles Addition
In this Christmas addition worksheet, students use models to identify the sum. Pictures of numbers include reindeer, candy canes, stockings, and angels. All addition problems are doubles ranging from doubling one to doubling five. An...
Curated OER
Adding Doubles Plus One (B)
In this addition worksheet, students find the sums of single digit doubles plus one. Students solve 21 problems associated with adding doubles.
Curated OER
Two-Digit Numbers Ending in 8 or 7
In this mathematics instructional activity, students circle the dots to form a complete ten and compare their problem to the one with just ones' digits. Then they add each problem and write down the corresponding problem with just the...
Curated OER
Adding Doubles Plus One (A)
In this addition worksheet, learners find the sums by doubling the least number and adding one. Students solve 21 problems.
Curated OER
Adding Integers II
In this adding integers activity, students solve 10 problems, adding integers. Students may click on hint or check answer buttons. Page has links to additional resources.
Curated OER
Number Sense
First graders practice rounding 4 digit numbers using place value concepts. In this estimating sums and differences instructional activity, 1st graders explore clustering, rounding, and front end estimation as methods for rounding decimals.
Curated OER
Addition Exercises
In this adding one worksheet, students add numbers in a two-column graph to find the sums by adding one to the numerals one to nine in sequence and observe the answer patterns. Students find eight sums.
Curated OER
Fractions
In this fraction worksheet, students find the sum and difference of fractions with unlike denominators. They multiply and divide fractions. Simple fractions, as well as mixed numbers are provided in this worksheet. This two-page...
Curated OER
Mathematics: One Hundred Plastic Ants
Third graders pick up plastic ants scattered on the floor. They take them back to their desks, count them, and add their totals to those of other students.
Curated OER
Addition and Subtraction
In this addition and subtraction activity, students add and subtract three and four-digit numbers with decimals. They justify their answers. This two-page activity contains approximately 12 problems.