Curated OER
Finding the Area of Polygons
Third graders are exposed to finding the area of polygons by decomposing figures and recomposing them into rectangles. This strategy allows children to expand on their prior knowledge of constructing shapes by rearranging parts into...
Science Matters
Crawly Composters
Get your hands dirty with an interactive lesson that showcases the process of decomposing and returning nutrients back into the soil. After building a compost pile, pupils regularly observe the ways worms help with changes to the soil...
Michigan State University
Friend or Foe?
What one person thinks is a pest may not be a pest to someone else. Here, scholars examine the characteristics of living things and pests through grand conversation and a variety of activities. Class members play a game of pest or not a...
West Contra Costa Unified School District
Adding by finding 10's
Count with ten frames in a first grade addition lesson. Kids determine how to identify numbers on a number line, as well as with ten frames, and complete ten frames to show their answers in several addition problems.
National Security Agency
Fraction Fever
This unit on fractions allows for upper-aged elementary learners to explore ways to find the greatest common factor and least common multiple of two numbers. Ultimately, young mathematicians will be able to identify equivalent fractions,...
EngageNY
Perimeter and Area of Triangles in the Cartesian Plane
Pupils figure out how to be resourceful when tasked with finding the area of a triangle knowing nothing but its endpoints. Beginning by exploring and decomposing a triangle, learners find the perimeter and area of a triangle. They then...
Alabama Learning Exchange
Understanding Fractions
Young learners explore fractions and demonstrate parts of a whole by using a candy bar and a piece of paper and dividing both into equal parts. Included is a worksheet that requires youngsters to color in half of each polygon shape. Some...
Curated OER
Kingdom: Fungi
The general characteristics that affect classification of fungi and other organisms in the domain Eukarya are detailed for the students on 12 attractive slides. Teachers can access individual slides to cover life cycles or diversity, or...
Curated OER
Fungi
The general characteristics that affect the classification of fungi and other organisms in the domain Eukarya are detailed on 12 attractive slides. Teachers can access individual slides to cover life cycles or diversity, or can use the...
Illustrative Mathematics
Finding Areas of Polygons, Variation 1
An exercise in finding the area of polygons by decomposing into triangles and composing into rectangles is the focus of this resource. Make several copies of the worksheet for each participant. Ask learners to use colored pencils to...
Science Matters
Oh Heron
Two teams—the environmentalists and herons—play four rounds of the game, Oh Heron. Using hand symbols to represent food, shelter, and water, players locate their match to produce more herons while those unmatched decompose.Â
Curated OER
Numbers Up
Students use Legos to build representations of a variety of numbers. They then sort and order their representations and pair them with the written number.
Curated OER
Greatest Common Divisor
In this greatest common divisor activity, students use prime factorization to determine the greatest common factors of two or more numbers. Explanations and examples are provided. This two-page activity contains ten problems.
Curated OER
Standard Written Method for Subtraction (2)
In this subtraction worksheet, students learn how to solve decomposition subtraction problems with 2-digit numbers. They then solve 9 subtraction problems on their own. The answers are on the last page of the packet.
Fuel the Brain
Solve Problems Using Strategies Such as Modeling and Composing/Decomposing Quantities
Hopefully your students know that motorcycles have two wheels and cars have four. By using this knowledge, they will be able to solve the first tricky story problem in this worksheet. Using methods of modeling and composing and...
Curated OER
Visual and Number Patterns
Fourth graders develop strategies for identifying geometric and number patterns. In this mathematical patterns lesson, 4th graders use pattern blocks to make repeating patterns with numbers and shapes. Students then explore number...
Curated OER
More or Less Than
Students practice completing equations with the less than or more than symbol. They use index cards to create the equations. They compete with other groups to get the most correct.
Helping with Math
Fractions: Adding Mixed Numbers (Same Denominator)
Add 30 sets of mixed fractions that have common denominators. Elementary math minds get plenty of practice with this printable page. You will find the answers provided with the click of a box in the upper left corner of the web page.
EngageNY
Fraction Equivalence, Ordering, and Operations
Need a unit to teach fractions to fourth graders? Look no further than this well-developed and thorough set of lessons that takes teachers through all steps of planning, implementing, and assessing their lessons. Divided into eight...
Curated OER
Students' Strides
Complete problems using base ten blocks to see the difference in the place value of a decimal and how it affects a number's value. Learners compare decimal values as well. Ample time for discussion and modeling are allowed in the...
Alabama Learning Exchange
Partying with Two/Three Digit Whole Numbers
Learners practice problem-solving with this addition activity. They plan a party for their class and another class by determining how many cupcakes are needed. Students draw a picture of how they determined the number of cupcakes.
Curated OER
Food Pyramid Power: Looking Back and Moving Forward
Students show their knowledge of properties of objects as it pertains to sorting and creating patterns. In this food pyramid power lesson, students show their ability to use whole numbers in different representations by appling...
Pennsylvania Department of Education
What Balances?
Students explore another meaning of subtraction as it pertains to the inverse of addition. In this what balances lesson, students identify the concept of subtraction as a balance. Students use subtraction facts to generate addition...
Science Matters
Formative Assessment #3
Thirteen short-answer questions follow a brief food web activity in a formative assessment designed to test knowledge of ecosystems and the energy that flows through them.