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Illustrative Mathematics
Placing a Square Root on the Number Line
There are many ways to approach finding the rational approximation of an unknown square root. Here is a problem that will help math learners make a connection between square roots and their order on a number line. As usual, determine two...
Illustrative Mathematics
Estimating Square Roots
No calculators! Assure your learners that they can find the square root of a large number. All they need are two known squares close by and a table. Come up with an additional practice and your number crunchers will have it mastered in...
Under the Dome
The Pythagoras Tree
View a tree designed by Pythagoras. Pupils watch a video as a tree is built by using squares representing the side lengths of a right triangle, with each side of the squares becoming the side of another triangle. Learners come up with...
Illustrative Mathematics
Rational or Irrational?
Is 4 plus the square root of 2 rational or irrational? After your class has gained a basic grasp of rational and irrational numbers, use this activity to push them a little further in their understanding. Learners must identify sums and...
Curated OER
Building a General Quadratic Function
Learners rewrite a general quadratic function by completing the square to see a new form of the function that more easily identifies the x-coordinate of the vertex and the two roots of the function.
Illustrative Mathematics
Checking a calculation of a decimal exponent
In a writing prompt, learners are asked to check the calculation of a decimal exponent without a calculator. Use as an opener or assessment after studying fractional exponents. Requires a strong understanding of exponents and roots to...
Illustrative Mathematics
Regular Tessellations of the Plane
Bringing together the young artists and the young organizers in your class, this lesson takes that popular topic of tessellations and gives it algebraic roots. After covering a few basic properties and definitions, learners attack the...
5280 Math
Capture the Points
Play a game of capture the points. Young scholars receive a number line with specific points graphed and must write an inequality that captures all the points. The second task of the algebra project is to write an inequality with...
Illustrative Mathematics
Applying the Pythagorean Theorem in a Mathematical Context
Participants who use this resource will apply the Pythagorean Theorem to show whether or not the shaded triangle inscribed in a rectangle is a right triangle. Once all of the sides on the shaded triangle are found, it is important that...
Illustrative Mathematics
Comparing Rational and Irrational Number
Algebra learners must know how to use rational numbers to approximate irrationals. This resource asks participants to decide which number is larger without using a calculator. It makes a great exercise to use as a five-minute transition...
Curated OER
Radical Equations
This task gives geometry learners practice in solving radical equations in one variable and zeros in extraneous solutions.
Oregon Department of Education
Building Number Sense
It's never too early to begin a child's math education. This collection of fun hands-on activities engage youngsters in building their number sense as they learn how to count objects, identify numerals, compare amounts, and much more.
Curated OER
Tale of the Tape
How can baseball and skeet-shooting be modeled mathematically? Sports lovers and young mathematicians learn how to use quadratic equations and systems of equations to model the flight paths of various objects.
Illustrative Mathematics
Graphs of Compositions
It might help when working with this resource to give an example of a composition function. For example, the amount of time it takes to get to work depends on the amount of traffic; the amount traffic depends on the time of day....
University of Saskatchewan (Canada)
University of Saskatchewan: Square Roots & Other Radicals
This University of Saskatchewan site provides general information about square roots and other forms of radical equations.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Solving Quadratic Equations by Finding Square Roots
Twenty problems present a variety of problems working with various aspects of solving quadratic equations by finding the square roots. They are given with each step to the solution cleverly revealed one at a time. You can work each step...
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Square Roots
Find a quick, concise explanation of square roots. An example is given and clearly explained.
Texas Instruments
Texas Instruments: Square Roots
In this activity, students develop an understanding of the relationship between a number and its square root.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Solving Quadratic Equations by Finding Square Roots
Thirteen problems present a variety of practice solving quadratic equations by finding square roots. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the...
Texas Instruments
Texas Instruments: Estimating Square Roots
By estimating the value of a square root students will get practice in identifying perfect squares, in checking for reasonableness of an answer, and in mental math.
Other
Math Pages: Ancient Square Roots
This site from Math Pages proivdes information and gives the Babylonian method for solving square root equations. The site is very intense and in-depth with good information. The material is pretty intense, however, and a background...
Integrated Publishing
Integrated Publishing: Roots, Exponents, and Radicals
Information on powers, roots, exponents, and radicals.
Math Is Fun
Math Is Fun: Squares and Square Roots
The learning activity examines squares and square roots. Topics include perfect squares, how to square a number, and the square root symbol. The resource consists of explanations and examples.
Oswego City School District
Regents Exam Prep Center: Simplifying Square Roots With Negative Numbers
This tutorial and practice shows how to simplify radicals even with a negative number. Features include a teacher page that has a Bingo game to teach the concept.