Willow Tree
Interior Angles, Exterior Angles, and Diagonals of Polygons
How does the number of sides of a polygon affect the angle measures? Learners recognize a pattern in finding the total measure of interior and exterior angles and the number of diagonals. They use the patterns to calculate the number of...
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Hands-On: Sums of Angle Measures
In this angle measures worksheet, students solve six word problems where they are given 6 different polygons, some of which are complex, and must determine angle measures in order to arrive at a solution.
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Polygons and Diagonals
Students practice measuring the interior angles of given regular polygons and create a formula for finding the measure of th interior angles of any polygon. They determine the relationships between the number of vertices's or sides in a...
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Magic Squares
In this magic squares instructional activity, students add up the sum of the rows, columns, and diagonals to see if they are all the same and write the magic number. Students complete 4 magic squares.
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Magic Squares
In this magic squares worksheet, students add up the sums of the rows, columns, and diagonals and they all have to be the same. Students complete 4 magic squares.
Curated OER
Magic squares
In this magic squares worksheet, students add up the sums of the rows, columns, and diagonals and they all have to be the same. Students complete 4 magic squares.
Curated OER
Magic Squares
In this magic squares learning exercise, learners add up the sums of the rows, columns, and diagonals and they all have to be the same. Students complete 4 magic squares.
Curated OER
Magic Squares
In this magic squares worksheet, students add up the sums of the rows, columns, and diagonals and they all have to be the same. Students complete 4 magic squares.
Curated OER
Magic Squares
In this magic squares instructional activity, students add up the sums of the rows, columns, and diagonals and they all have to be the same. Students complete 4 magic squares.
Curated OER
Finding The Sum of an Infinite Series
Students examine finding the sum of an infinite series as the limit of partial sums. Through hands-on activities, students create their own sequence by finding the area of a square and then cutting it in half-sized pieces. They write...
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Fractions and Rationals
Upper elementary and middle schoolers solve 16 types of problems to include writing fractions to represent shaded portions, writing a mixed number to represent certain points on a number line, and changing equivalent mixed numbers to...
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Properties and Attributes of Polygons
For this geometry worksheet, 10th graders determine if a polygon is convex or concave and apply the polygon Angle sum theorem and the polygon exterior angle sum theorem to determine the measures of interior and exterior angles of a...
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Geometry Journal: Isosceles Triangles
In this isosceles triangles worksheet, students justify and determine the symmetry of an isosceles triangle. They explore the bisector of rectangles. This three-page worksheet contains two problems. Answers are listed on page three.
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A Fibonacci Primer
Upper graders explore the Fibonacci sequence. They examine the characteristics of the Fibonacci sequence, list the properties of the sequence and determine how it connects to Pythagorean Triples. Related thinking questions are included.
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Magic Squares
In this magic squares worksheet, students complete each magic square where each row, column, and diagonal have to be the same sum. Students complete 6 magic squares.
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Number Search Y4: Make 12
In this number search activity, students find and highlight at least 12 addition, subtraction, multiplication and/or division math problems that make the sum of 12.
Improving Measurement and Geometry in Elementary Schools
The Sum of the Interior Angles of a Polygon
Junior geometers discover that polygons can be decomposed into triangles and that the number of triangles can be determined by a rule. Note that the Geometer’s Sketchpad® software is required to carry out all components of this lesson.
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A Rectangle in the Coordinate Plane
A quadrilateral is drawn on the coordinate plane, and eighth grade geometers find the length of each side and the diagonals by applying the Pythagorean theorem.
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Visualizing Vectors
Investigate vectors in standard positions and use the CellSheet application on the TI calculator to find the sum of two vectors. Convert from polar to rectangular coordinates and vice versa, and show graphs of the vectors.
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Magic Squares Vocabulary: Catcher in the Rye
Magic squares make learning fun! Seriously! Learners use the given square to review vocabulary terms from J.D. Salinger's Catcher in the Rye. The 16 vocabulary terms are not divided by chapter, they represent the whole book. As learners...
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Things Fall Apart: Vocabulary
What is a magic vocabulary square? Use this newly popular method of reviewing vocabulary to engage your class. There's some tricky vocabulary in Things Fall Apart; front-load words like impending, impudent, and pacified to ease the...
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Magic Squares
In this addition worksheet, students complete 4 magic squares in which the sums of the rows, columns and diagonals must be the same. Students analyze the filled-in squares and calculate the sum or the magic number.
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Number Search Y6 Make 24
In this number search worksheet, students find the sums in the number search that equal 24 and circle them. They can be multiplication, addition, subtraction, and division. They then write the sums in the space at the bottom of the page....
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Angles
In this math learning exercise, middle schoolers measure a series of angles. Then they measure the angles in the triangles and determine the sum of the angles.