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Curated OER
Addition: 2-digit + 2-digit - Regrouping
In this addition worksheet, 3rd graders focus on the addition of double digit numbers. Students solve for 30 problems using regrouping where necessary.
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Subtraction Shopping
Students subtract two digit numbers. They check each other's answers for accuracy.
Curated OER
Addition Worksheet: Totals 19 or Less #1
In this addition worksheet, students complete a total of 35 problems, all answers to problems total 19 or less. Worksheet included links to answers and additional worksheets.
Curated OER
Addition Worksheet: Totals 10 or Less #2
In this addition worksheet, students complete a total of 35 problems, all answers to problems total 19 or less. Worksheet included links to answers and additional worksheets.
Curated OER
Making Changes
Students observe and record the changes they see when adding heat and cold to objects. In this changes lesson plan, students experiment with different objects and see if heat and cold change the makeup of the object. They then record...
Curated OER
Refresh Your Memory
In this math worksheet, students break down one digit numbers by thinking of numbers which can be added together to get that sum. Students then relate simple subtraction facts in the same family. There are 15 problems.
Curated OER
Fraction Strips: Adding Fractions
Third graders problem solve using fraction strips. For this adding fractions lesson, 3rd graders create fraction strips to help identify fractional sizes (fourths, eighths, thirds) and to solve word problems.
Curated OER
Add Groups of 10
For this addition worksheet, students count each group and write the 2-digit number in the top boxes. Students add the number shown in each table to this number. Students draw a line for each extra 10 added. Students record the total at...
Curated OER
The Math Lesson 1: Fractions
In this fractions practice worksheet, learners use their problem solving skills to solve 275 problems that require them to add and subtract fractions and mixed numbers.
Pennsylvania Department of Education
Shapes Around Us
Learners use manipulatives to study shapes. They sort shapes and use correct geometric terminology to describe them. Students find real-life examples of 2 and 3 dimensional shapes, and classify figures in their classroom according to...
Curated OER
On the Trail of the Hudson's Migratory Fish
Using data related to the fish in the Hudson River area, learners calculate distance, elapsed time, and growth. They learn about migratory fish, the life cycle of a fish, analyze a map, and answer questions.
Alabama Learning Exchange
Fun with Problem Solving
Using a varity of strategies, young mathematicians solve multistep word problems. They play a logic game as a whole group, and then work with a partner on a computer to complete a worksheet that requires a variety of problem solving...
Curated OER
Addition / Subtraction Connection
In this addition and subtraction instructional activity, students write addition and subtraction number sentences that relate to each other and solve word problems. Students complete 6 sets of problems.
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Investigation - Who is Right?
Third graders explore mathematics by solving problems in groups. In this math functions lesson, 3rd graders demonstrate their understanding of addition and subtraction by completing two digit math problems. Students define a list of math...
Alabama Learning Exchange
Number Clues
Students practice problem solving. In this number identification lesson plan, students practice identifying numbers based on clues or characteristics given. They also work in groups to identify the clues for given numbers.
Curated OER
Secret Sequences
Students are exposed to different types of sequences. in this sequencing lesson, students learn about simple sequences, multiplication sequences, declining sequences, the Fibonacci sequence and other sequences.
Curated OER
Maya Math: Addition and Subtraction
Students examine how ancient Maya counted, and practice addition and subtraction using Maya number glyphs.
Curated OER
Addition and Subtraction Vocabulary Problems
For this addition and subtraction worksheet, students use the number sentences and clues to determine the numbers for each problem.
Curated OER
Choose the Operation: Plus or minus (up to 100)
Investigate the relationship between addition and subtraction as scholars fill in these number sentences, each of which is missing a symbol. Is it a subtraction or addition equation? There are 20 of these to start, all written...
Curated OER
Making a Ten
An addition table supports third graders as they learn strategies to improve their math fluency. When finding sums greater than ten, young scholars are taught how to first make a ten and then add on the rest. A similar method is also...
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Carrying to Tens and to Hundreds
In this math worksheet, students learn to add larger numbers, carrying 2 times to the tens and to the hundreds. Students study the detailed pictures and examples; there are no problems to solve on the page.
Curated OER
Addition Terminology and Practice
In this addition worksheet, students review the terminology and definitions for the words addends and sum. Students then write the given numbers as sums in as many different ways as they can. Students also write addition sentences for...
Curated OER
Making Number Patterns
In this number patterns worksheet, students follow instructions to create number patterns with given starting numbers. A website reference for additional resources and answer key are provided.
Curated OER
Making Number Patterns
In this number patterns learning exercise, students make number patterns for sets of rules given. Answers and a reference website are included.