CK-12 Foundation
Alternate Formula for the Area of a Triangle: Alternate Area of a Triangle
It's always nice to have a plan B. Pupils investigate an alternate formula for the area of a triangle that uses sine. A set of challenge questions shows how the new formula relates to the well-known formula of (1/2)bh.
CK-12 Foundation
Normal Approximation of the Binomials Distribution: When to Approximate
Normalizing a binomial distribution — determine when it is all right. Given the rule of thumb of when it is appropriate to use the normal distribution to approximate a binomial distribution, pupils look at different scenarios....
CK-12 Foundation
Graphs of Linear Model of Direct Variation: On the Moon
You'll be over the moon about this resource. Scholars draw a line representing the weight of an object on the moon based on its mass. Consideration of the constant of proportionality allows them to see relationships between weight of an...
CK-12 Foundation
Angle Classification: Angles in the Game of Pool
Make a game of angle classification. Using the direction of the pool ball, scholars determine the measure of the created angles. They work to create and classify different types of angles throughout an engaging interactive.
CK-12 Foundation
The Real Numbers: Size of Infinite Sets
The learning opportunities with the resource on infinity are finite, but it's still good to use. Individuals investigate the size of the set of integers and the set of even integers. Conclusion: the two sets have the same size.
CK-12 Foundation
The Real Numbers: Number System
Get real about learning the real number classification. Young mathematicians create a graphic organizer of the real number system using an interactive. They answer a set of challenge questions on the classifications of real numbers.
CK-12 Foundation
Sampling Distribution of a Sample Mean: The Mean of the Average Ages
What does it mean to take the mean of the mean? An easy-to-use interactive has users adjust the mean ages of different samples. Finding the average of these sample means gives an estimate of the population mean.
CK-12 Foundation
Limit of a Sequence: Finding the Limit of a Sequence (Part 1)
Put a squeeze on a sequence. An interactive provides a graphical display of a sequence. Using the graph, learners determine the algebraic expression for the sequence. Pupils use the general definition of a limit of a sequence to find the...
CK-12 Foundation
Limit of a Sequence: Finding the Limit of a Sequence (Part 2)
What does it mean if young mathematicians cannot put the squeeze on a sequence? Learners investigate a divergent sequence and find the formula for the nth term. Using the definition of a limit of a sequence, pupils try to find the limit...
National Museum of the American Indian
The Kwakwaka'Wakw: A Study of a North Pacific Coast People and the Potlatch
Discover the cultural practices and unique value systems of a group of native peoples from Canada called the Kwakwaka'wakw. Your young historians will discuss how conceptions of wealth can vary and how these native...
Denton Independent School District
Pieces to the Puzzle Fraction Project
Four polygons each have a fraction with unlike denominators printed on them. Creative math minds select several shapes to create a design with and then write and solve a math problem involving the addition of all of the fractions...
CK-12 Foundation
Trigonometric Functions and Angles of Rotation: The Triangle in the Circle
Go around the unit circle and create triangles. Pupils move a point around the unit circles to visualize the triangle associated with the angle in standard position. The three main trigonometric functions are defined in terms of the legs...
CK-12 Foundation
Slope of a Tangent Line: Slope of the Tangent and Secant Lines
Learn to find the slope through a single point. The interactive provides a visualization of how to find the slope of a tangent line. With the aid of the visualization, pupils see the definition of the derivative in action. Class members...
Reed Novel Studies
Freak The Mighty: Novel Study
They say when you are told something enough times, you eventually begin to believe it's true. Sadly, Max in Freak The Mighty believed he was stupid and dumb, so he learned to be alone. That changed when he met another outcast, Freak....
Reed Novel Studies
The One and Only Ivan: Novel Study
A new friend, a new perspective, and a new light are all found in Katherine Applegate's The One and Only Ivan. Ivan, a gorilla, was content with his life until a baby elephant befriended him. Readers find synonyms, answer...
Penguin Books
An Educator's Guide to The Green Glass Sea by Ellen Klages
A lot of secrecy shrouded the creation of the atomic bomb. Readers uncover some of that secrecy using an educator's guide for the novel The Green Glass Sea. Three weeks of lesson plans feature discussion questions and reading...
Center for Civic Education
Orb and Effy Learn About Authority
Simplify the teaching of the US Constitution with this primary grade social studies lesson. While reading a fun story about an imaginary place called Bubble Land, children learn about the concept of authority and the importance of...
NASA
The X-1 Paper Glider Kit
After reading an interesting account of how the X-1 aircraft was designed, built, and utilized, young engineers try their hand at constructing a paper glider version of the airplane. They cut out the plane out of a nicely designed...
Curated OER
First Letter Changes
Students use the books of Eric Carle to change the first letter in a word to see a new word. In this phonics lesson plan, students change the beginning letters in poems and books.
Curated OER
Breaking the Unjust Law
Students consider the concept of civil disobedience. In this lesson on changing unjust laws, students use primary sources to understand how Gandhi and King changed the law. Students will then list laws that they feel are unjust and plan...
Curated OER
Chemical Changes
Fourth graders examine and identify chemical and physical changes in a variety of substances. They observe a vinegar and baking soda demonstration, and a water, laundry detergent, and Epsom salt mixture demonstration. They discuss the...
Curated OER
Time For Change
Students examine and discuss the inventions and changes created by the Industrial Revolution. They create posters or clay models about inventions, write paragraphs about the advantages and disadvantages of the changes, and develop a...
Curated OER
Determine the Meaning of a Word Using Knowledge of Base Words and Affixes
Affixes can change the entire meaning of a word! Pupils practice with three prefixes and three suffixes in this scaffolded word meaning resource. There are affix cards here you can display in a pocket chart as you review. Learners first...
Curated OER
The Changing Experience of Colonial Childhood
Students research how childhood was depicted in art in the 17th through 19th centuries. In groups, they research pieces of art and write a paper explaining how the portrayal of students in art changed at the end of the 18th century.