Concord Consortium
Short Pappus
It's all Greek to me. Scholars work a task that Greeks first formulated for an ancient math challenge. Provided with an angle and a point inside the angle, scholars develop conjectures about what is true about the shortest line segment...
Concord Consortium
Shooting Arrows through a Hoop
The slope makes a difference. Given an equation of a circle and point, scholars determine the relationship of the slope of a line through the point and the number of intersections with the circle. After graphing the relationship, pupils...
Learning Games Lab
Scientific Graph Reading
Interpreting graphs is an essential skill for young scientists. An interactive online lesson gives individuals an opportunity to review the components of a graph and learn to read and interpret the shape of a graph. The lesson includes...
Flipped Math
Calculus AB/BC - The Fundamental Theorem of Calculus and Accumulation Functions
Connect integrals with differentiation. The beginning of the video introduces the definition of an accumulation function. Scholars learn about the relationship between integrals and derivatives. Using what is commonly known as Part Two...
EngageNY
Slicing on an Angle
No matter how you slice it, it's still a polygon! An engaging lesson examines the different ways you can slice a prism. The lesson begins with simple parallel and perpendicular slices. It then challenges scholars to slice the prism to...
EngageNY
Conditions for a Unique Triangle—Three Sides and Two Sides and the Included Angle
Building on the previous lesson plan in the 29-part series, the ninth lesson plan asks individuals to construct a triangle given specific criteria. First, they are given three specific side lengths, followed by two sides and the included...
EngageNY
Using the Identity and Inverse to Write Equivalent Expressions
The fifth installment in the series of 28 lessons helps math scholars explore the result of adding opposite numbers and multiplying reciprocals. Through this exploration, they develop a working definition of identity and inverse properties.
EngageNY
Collecting Rational Number Like Terms
Teach pupils to handle fractions fluently. The sixth installment in the series of 28 has class members apply the concepts learned in previous lessons to expressions with fractional coefficients. The fractions are both mixed numbers and...
EngageNY
Volume and Surface Area II
Determine the cost of projects based on volume or surface area. Pupils work problems to determine the cost of building a brick planter and a stainless steel feeder in the 27th installment of a 28-part series. Participants must consider...
The Science Spot
Independent Investigation Guidelines
A neatly formatted outline of the steps of the scientific method can be used as a reference sheet for your future science fair participants. For each step, you will find a few guiding questions or points to remember when working on...
K12 Reader
Extending Patterns
2, 4, 6, 8. What comes next? This reading comprehension activity discusses patterns and extending patterns. After reading the short article, kids answer a series of questions to demonstrate their understanding of the passage.
Media Smarts
Newspaper Ads
Just how free is the press? After examining the advertising and propaganda techniques used by advertisers, class members consider the influence advertisers may exert over newspaper content.
National Nanotechnology Infrastructure Network
Is Measuring an Art or a Science?
Not only do future engineers learn the difference between accuracy and precision, they also get some hands-on experience using different measuring tools.
Curated OER
Alphabet Cards
Update your classroom decor with this series of colorful alphabet displays. Showing both upper- and lowercase letters with vibrant pictures representing each, these posters will fit nicely in any primary grade classroom.
Mathster
Line and Rotational Symmetry
Challenge young mathematicians' understanding of symmetry. Provided with images of different shapes, letters, and national flags, students are tasked with identifying the lines of symmetry and order of rotational symmetry...
Illustrative Mathematics
Logistic Growth Model, Abstract Version
Here learners get to flex some serious algebraic muscles through an investigation of logistic growth. The properties of the constant terms in the logistic growth formula are unraveled in a short but content-dense...
Illustrative Mathematics
Seven Circles III
A basic set-up leads to a surprisingly complex analysis in this variation on the question of surrounding a central circle with a ring of touching circles. Useful for putting trigonometric functions in a physical context, as well as...
Illustrative Mathematics
Placing a Fire Hydrant
Triangle centers and the segments that create them easily become an exercise in memorization, without the help of engaging applications like this instructional activity. Here the class investigates the measure of center that is...
Kinder Corner
Counting Cards
Reinforce counting skills with a set of cards that showcase numbers 1–10. Two types of cards are provided—a number card and a card that represents the number with objects.
University of Saskatchewan
Using Conservation of Energy to Determine Average Impact Force
Explore the center of gravity with your science class as they create a deadfall trap with common materials. They research the concepts of energy conservation and gravitational force before dividing into small groups to create a model of...
Mathematics Assessment Project
Maximizing Area: Gold Rush
Presenting ... the gold standard for a lesson. Learners first investigate a task maximizing the area of a plot for gold prospecting. They then examine a set of sample student responses to evaluate their strengths and weaknesses.
Math Worksheets Land
Hayride Fractions
Ten bales of hay divided into equal parts. Which two bales of hay are equivalent to each other? Here, young mathematicians match equivalent bale of hay fractions to one another.
Mathematics Assessment Project
Shelves
Don't leave this task on the shelf — use it is assess middle schoolers understanding of patterns. Participants try to discover a pattern in the number of bricks and planks used to make shelves. They then match descriptions...
Balanced Assessment
Stick Patterns
Sticks and stones may break my bones, but these sticks will make me smarter. Pupils examine arrays of sticks to determine the next array in a pattern. They use the number of sticks added to each previous array to determine a recursive...
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