Flipped Math
Special Right Triangles I
Introduce a special relationship with right triangles. Learners discover the ratio of the sides in a 30-60-90 triangle. After watching several examples and seeing two different methods, pupils find unknown sides in triangles. Scholars...
Flipped Math
Special Right Triangles II
Show students that right triangles are radical. Learners see how the lengths of the sides of a 45-45-90 triangle relate. Using that relationship, pupils observe how to find any of the lengths given one side of a triangle. They go on to...
K20 LEARN
HOT Questions: Creating Meaningful Questions
Scholars examine a list of questions and sort them into corresponding groups based on similarities. A gallery walk allows peers to see how their peers sorted questions and leave notes. Costa's Level of Questions is the topic of a...
EngageNY
More Problems on Area and Circumference
Perimeter check! Pairs work on finding the areas of semicircles and quarter circles using a relationship with squares. The problems challenge pupils to find areas of composite figures made from rectangles, semicircles, and quarter circles.
EngageNY
Conditions on Measurements That Determine a Triangle
Can any three side lengths create a triangle? Your classes tackle this question and more in the 11th instructional activity of the 29-part module. Through modeling with patty paper, individuals discover the relationship between the...
Curated OER
Examining What Sharing Really Means
Learners read "The Senegalese Miracle". They discuss the amount of sharing the author finds in Africa. They examine the relationship the author has to the locals.
EngageNY
The Most Famous Ratio of All
Pupils develop a definition of a circle based upon its radius in the 17th segment of a 28-part series. They determine the relationship between the radius and the diameter of a circle. To round out the lesson, they use the formula for the...
EngageNY
Identifying Proportional and Non-Proportional Relationships in Tables
Learners determine whether there is a constant multiple within the table through an instructional activity that presents a method for determining whether two quantities are proportional. Pupils analyze tables to determine if they...
Curated OER
The Pythagorean Theorem and Classifying Triangles
Through the examination of the relationship between the lengths of the sides of a triangles high schoolers will learn the classification of triangles (acute, right, or obtuse).
Curated OER
Cellular Respiration
In this cellular respiration worksheet, students use 14 terms from a word bank to complete a graphic organizer showing the relationship between the words.
Pingry School
Determination of the Molar Mass of an Unknown Acid
Acids and bases have a love-hate relationship. They balance each other so nicely, but they are complete opposites! Learners use these concepts and titration to calculate the molar mass of an unknown substance. The experiment...
Curated OER
Stretching the Quads
Explore parabolas in this algebra lesson with the graphing calculator. The class investigates what effects the changing of the parameters of the vertex form of a quadrati have to its graph. They find the zeros of a quadratic graphically...
Curated OER
Barbie Bungee
Middle and high schoolers collect and analyze their data. In this statistics lesson, pupils analyze graphs for linear regression as they discuss the relationship of the function to the number of rubber bands and the distance of the...
Curated OER
Further Investigating Greater Than, Less Than, and Equal to
Students investigate number relationships such as greater than, less than, and equal to. In this number relationship lesson, students use number mats and a fish with a large, open mouth to practice showing number relationships.
National Wildlife Federation
Woodland Chase
Too many predators or too many prey is not good for a habitat. Pupils learn how the predator-prey relationship serves to maintain healthy populations with a game simulation. Individuals take on the roles of either a predator or prey and...
K12 Reader
Antonym Animals
What's the antonym for wild? What's the opposite of young? Young readers identify the antonyms in a series of ten sentences. Next, they jot down the word pairs to reinforce the relationship between each set of antonym.
Media Smarts
First Person
High schoolers explore the relationship between video games and actual population. Example: A 2005 study showed Latino youth play at higher rates than other groups, but there are no Latino playable characters. They watch a brief video...
Curated OER
Connect the Rhymes
Pre-readers benefit from visual context clues like the ones in this rhyme worksheet. There are two sets of objects here, and scholars connect objects on the left with their rhyming counterparts on the right. Each word has the vowel...
Curated OER
Fact Families - Part 2
Complete these fact families; mathematicians use addition number sentences to write three more equations, all of which are members of the same fact family. There is an example here to guide them, and they solve for nine more number...
DK Publishing
Sets
Do scholars understand multiplication as sets of numbers? Help them grasp this concept through groups of objects arranged as a makeshift multiplication number sentence. They examine the sets and fill in boxes to indicate how many sets of...
DK Publishing
Multiply or Divide? Part 2
Explore the relationship between multiplication and division as scholars fill in these number sentences, each of which is missing a symbol. Is it a multiplication or division equation? There are 18 of these to start, all written...
DK Publishing
Number Riddles - Word Problems
Although this set of 16 word problems aren't the most riveting, they give clear practice opportunities for learners to solve missing factor and dividend problems. Each scenario is only a sentence or two, and some don't even involve...
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...
Illustrative Mathematics
Crude Oil and Gas Mileage
Here is an activity that presents a real-world problem about the relationship between crude oil production and the gas mileage of modern automobiles. After learners write functions to describe the relationships, they are asked to...
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