These numbers have some personality! Are they rational or irrational? The lesson examines the definitions of rational and irrational numbers and shows examples of how to identify them. 

How do you solve for an unknown angle? In this sixth installment of a 36-part series, young mathematicians use concepts learned in middle school geometry to set up and solve linear equations to find angle measures.

How did free and enslaved blacks work to craft freedom for themselves and their families before the Civil War? Young historians read about the life of Thomas Day, a free black man who also owned slaves and had abolitionist ties in...

Is that drawn to scale? Capture the artistry of geometry using the ratio method to create dilations. Mathematicians use a center and ratio to create a scaled drawing. They then use a ruler and protractor to verify measurements. 

Breaking the rules is one thing, proving it is another! Learners expand on their previous understanding of congruence and apply a mathematical definition to transformations. They perform and identify a sequence of transformations and use...

What happens when rotating an image 180 degrees? The sixth lesson in the series of 18 takes a look at this question. Learners discover the pattern associated with 180-degree rotations. They then use transparency paper to perform the...

Logical thinking is at the forefront of this jam-packed lesson, with young mathematicians not only investigating geometric concepts but also how they "know what they know". Through each activity and worksheet, learners wrestle with...

Not all linear functions are linear transformations, only those that go through the origin. The third lesson in the 32-part unit proves that linear transformations are of the form f(x) = ax. The lesson plan takes another look at examples...

Scholars take transformations from the second to the third dimension as they extend their thinking of transformations to include three-dimensional figures. They explore how to use matrices to represent compositions of...

Examine numbers in scientific notation as a comparison of size. The 14th lesson in the series asks learners to rewrite numbers as the same power of 10 in scientific notation to make comparisons. Pupils also learn how to use a calculator...

[Free Registration/Login Required] XtraMath is an excellent site for students to practice their basic number facts and develop automatic recall. Teachers can register for a free account and are then guided through the steps for setting...

Funky Mummy is a mobile-friendly number facts game. Play this game to practice quick recall of addition, subtraction and multiplication facts.

Lay the foundation for addition facts with introducing students to "the understanding that the number relationships between 0 more than, 1 more than, and 2 more". To help implement this lesson the website contains documents and videos.

Recall bonds of 20. See the Funky Mummy dance when you get it right! Get 10 answers correct without clicking on a wrong sarcophagus and you can write in Egyptian hieroglyphs.

[Free Registration/Login may be required to access all resource tools.] For this learning module, students are asked to identify multiplication patterns and to recall their multiplication facts to fill in missing numbers. Includes video...

Choose an arithmetic challenge and the number of questions you want to answer. The numbers are generated from dice. See how quickly you can calculate each answer and choose it from the chart. Your score and speed appear at the end of the...