Rectangles ABCD has a fixed perimeter of 20 feet. The slider changes ...

Rectangles ABCD has a fixed perimeter of 20 feet. The slider changes the length AD from 0 to 10 ft. Rectangle�s sides are coordinated with a slider to keep the perimeter a constant 20 ft. Area of the rectangles with fixed perimeter is the basis for a f

This is an activity on the special properties of Rectangles. It is ...

This is an activity on the special properties of Rectangles. It is extremely brief and is used in conjunction with the applets on parallelograms and rhombi.

Students will discover what the area of a triangle is by recording ...

Students will discover what the area of a triangle is by recording the area of rectangles and triangles and noticing what the relationship between the two is. Steps to make the applet: 1. With the polygon tool (5th from the left) constr

Displaying the trajectory of a ball which is reflected in a rectangle ...

Displaying the trajectory of a ball which is reflected in a rectangle (i.e. billiard without holes). Twenty reflections are possible, adding more is semi automated (the last row in spreadsheet has to be dragged one row down at a time).

This lesson focuses on calculating the areas of rectangles. It is designed ...

This lesson focuses on calculating the areas of rectangles. It is designed to enable adult students to successfully master basic geometry knowledge in order to achieve their High School Equivalency (HSE). Areas to be covered include types of polygons, quadrilaterals, rectangles; calculating areas of rectangle and calculating costs. Students will apply this knowledge to practical areas of their lives such as calculating the costs of purchasing carpets or painting of walls

This lesson focuses on calculating the areas of rectangles. It is designed ...

This lesson focuses on calculating the areas of rectangles. It is designed to enable adult students to successfully master basic geometry knowledge in order to achieve their High School Equivalency Diploma (HSED). Areas to be covered include types of polygons, quadrilaterals, rectangles; calculating areas of rectangles and calculating costs. Students can apply this knowledge to practical areas of their lives such as calculating the cost of purchasing carpet or painting walls.

This lesson focuses on using the properties of rectangles to calculate area. ...

This lesson focuses on using the properties of rectangles to calculate area. It is designed to aid adult students to successfully master and apply basic geometry knowledge in a professional setting (construction and related) and can also contribute to achieving High School Equivalency (HSE). Areas to be covered include properties of rectangles and squares; definition of ‘square’; right-angled triangles; calculating areas of rectangles and right-angled triangles; decomposition of area into manageable units; and calculating costs. Students will apply this knowledge to calculating the costs of purchasing building materials.

This lesson focuses on calculating the areas of rectangles. It is designed ...

This lesson focuses on calculating the areas of rectangles. It is designed to enable adult students to successfully master basic geometry knowledge in order to achieve their High School Equivalency (HSE). Areas to be covered include types of polygons, quadrilaterals, rectangles; calculating areas of rectangle and calculating costs. Students will apply this knowledge to practical areas of their lives such as calculating the costs of purchasing carpets or painting of walls

(Updated 1 Nov 2011) A set of 7 Chinese match puzzles related ...

(Updated 1 Nov 2011) A set of 7 Chinese match puzzles related to squares and rectangles. Another set of puzzles related to triangles or diamonds (rhombi).

Before learning the concept of area, students may think that the figure ...

Before learning the concept of area, students may think that the figure with a longer perimeter has a larger size. In this worksheet, students can check this idea by comparing the sizes of a square and a rectangle using cut and paste. An introductory task

To see how to dissect an equilateral triangle to a rectangle, and ...

To see how to dissect an equilateral triangle to a rectangle, and then investigate positions of the dissection points at which the rectangle becomes a square (the Dudeney's Puzzle).

(Updated 20 Feb 2012) A quadrilateral can be dissected into a rectangle ...

(Updated 20 Feb 2012) A quadrilateral can be dissected into a rectangle by a Lines joining the mid-points of one pair of opposite sides, and the perpendiculars to this Lines from the mid-points of the other pair of opposite sides (see

No restrictions on your remixing, redistributing, or making derivative works. Give credit to the author, as required.

Your remixing, redistributing, or making derivatives works comes with some restrictions, including how it is shared.

Your redistributing comes with some restrictions. Do not remix or make derivative works.

Copyrighted materials, available under Fair Use and the TEACH Act for US-based educators, or other custom arrangements. Go to the resource provider to see their individual restrictions.