Study Pad
Splash Learn: Partition Shapes: Halves and Fourths
[Free Registration/Login Required] Answer questions about the halves and fourths of circles and rectangles, and collect coins for each correct answer.
Khan Academy
Khan Academy: Halves and Fourths
Practice dividing shapes into 2 or 4 equal sections. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Elem Math: Overview of Quarter Circles and Semi Circles
[Free Registration/Login may be required to access all resource tools.] The video distinguishes between a quarter and semi-circle by defining and giving examples of each.
Discovery Education
Discovery Education: Web Math: K 8 Math
This WebMath site shows how to add, subtract, multiply and divide through a step by step examples. The user simple selects the operation and types in two numbers, and the computer solves the problem through a step by step process. Also...
Khan Academy
Khan Academy: Equal Parts of Circles and Rectangles
In this exercise, students practice identifying equal parts of circles and rectangles. Students receive immediate feedback and have the opportunity to get hints, watch a tutorial video, and try questions repeatedly.
Illustrative Mathematics
Illustrative Mathematics: k.oa Shake and Spill
The purpose of this task is for students to decompose a number as a sum of two other numbers in more than one way. Students will shake and spill 5 two colored counters and determine how many of each color is showing and record the sum...
Illustrative Mathematics
Illustrative Mathematics: Make 9
Students will make 9 in as many ways as they can by adding two numbers between 0 and 9. This is a good introduction to the commutative property.
Illustrative Mathematics
Illustrative Mathematics: Which Is Longer?
Students are introduced to the concept of length with this hands-on activity. Each student will choose two objects to compare by laying them next to each other and comparing which is longer. Students will record and discuss their findings.
Illustrative Mathematics
Illustrative Mathematics: Longer and Shorter
Students will use their shoe as a measuring item to learn about length. Students will compare classroom items by holding their shoe against the item and deciding if it is longer or shorter than their shoe. Students will record their...
Illustrative Mathematics
Illustrative Mathematics: Shape Sequence Search
This activity tests the student's understanding of patterns. The teacher will read a pattern and the student will find the row or column that contains each sequence. Example included.
Illustrative Mathematics
Illustrative Mathematics: Alike or Different Game
Students work in pairs and take turns drawing two cards. These cards have pictures of different shapes. The students are asked to describe what is similar or different between the two shapes. This type of task lays the foundation for the...
Illustrative Mathematics
Illustrative Mathematics: The Napping House
The teacher reads "The Napping House" to the class, stopping each time a person or animal gets into the bed so the students can add a counter to the ten-frame. Ten-Frame printable is included.
Illustrative Mathematics
Illustrative Mathematics: More and Less Handfuls
This is a good small group/pairs activity to practice counting. Each student grabs two handfuls of counters and counts them. The student then draws and records the quantity on a student-recording sheet (example included). Student...
Illustrative Mathematics
Illustrative Mathematics: Finding Equal Groups
This activity will test how quickly students can count objects. The teacher will assemble a variety of groups of objects in a few different forms (examples included). Students will race against the clock to sort the groups of objects...
Illustrative Mathematics
Illustrative Mathematics: Equality Number Sentences
Learners will compare the number of circles in two boxes. If they are equal, they will write a number sentence. Explanations and examples are included.
Illustrative Mathematics
Illustrative Mathematics: Fact Families
As a whole class, the teacher presents students with 3 numbers on cards, such as 5, 8, and 3. The teacher asks the students to find all the ways the numbers can be put together in addition or subtraction sentences. This lesson plan...
Illustrative Mathematics
Illustrative Mathematics: Red and Blue Tiles
Students will determine whether a set of objects contains an even or odd number of members using strategies such as pairing objects or attempting to divide the objects into two equal subgroups. Discussion questions and explanations are...
Illustrative Mathematics
Illustrative Mathematics: Overlapping Rectangles
The purpose of this task is to give students an opportunity to compose and decompose polygons to make rectangles. The students will be shown a picture and are asked to count how many rectangles they see. Explanations and examples are...
Illustrative Mathematics
Illustrative Mathematics: How Long?
Students will investigate the attribute of length by using a common measurement tool such as snap or unifix cubes to directly measure objects in the classroom. Materials needed include various items to measure, a large set of cubes such...
Illustrative Mathematics
Illustrative Mathematics: Make Your Own Puzzle
Students will cut a square into four pieces, and then will put those pieces in an envelope for another student to put together. The purpose of this task is to give students a hands-on experience with composing and decomposing geometric...
Illustrative Mathematics
Illustrative Mathematics: Measure Me!
Learners will work in pairs and measure each other using Unifix cubes. They will record their measurements on a worksheet which is included. Detailed instructions are provided.
Illustrative Mathematics
Illustrative Mathematics: Grandfather Tang's Story
The purpose of this task is for students to compose two-dimensional shapes to create a composite shape using tangram pieces. The teacher will read "Grandfather Tang's Story" and the students will use tangrams to compose the animals from...
CK-12 Foundation
Ck 12: Elem Math: Identifying Semi Circles and Quarter Circles
[Free Registration/Login may be required to access all resource tools.] The video defines a semi-circle and a quarter-circle and answers a question determining which object is a semi-circle. The video is followed by a series of practice...
CK-12 Foundation
Ck 12: Elem Math: Counting Semi Circles and Quarter Circles in Composite Figures
[Free Registration/Login may be required to access all resource tools.] The video defines composite figures, semi-circles, and quarter circles, then uses those definitions to determine how many semi-circles and quarter circles are in the...