ALEX Resources

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Learning Activities (1) Building blocks of a lesson plan that include before, during, and after strategies to actively engage students in learning a concept or skill. Classroom Resources (3)

ALEX Learning Activities  
   View Standards     Standard(s): [MA2019] (5) 22 :
22. Classify quadrilaterals in a hierarchy based on properties.
[MA2019] (5) 21 :
21. Classify triangles according to side length (isosceles, equilateral, scalene) and angle measure (acute, obtuse, right, equiangular).
[MA2019] (5) 23 :
23. Explain that attributes belonging to a category of two-dimensional figures also belong to all subcategories of that category.

Example: All rectangles have four right angles, and squares have four right angles, so squares are rectangles.
Subject: Mathematics (5)
Title: 2D Shape Classification
Description:

This interactive mathematics resource explores the properties of triangles, quadrilaterals, and regular polygons and allows students to classify shapes based on their properties.

This interactive has an "explore it" tool that could be used to teach attributes of 2D shapes, and also a "use it" Shape Guess game that students can practice identifying and sorting shapes according to their attributes.

This learning activity was created as a result of the Girls Engaged in Math and Science University, GEMS-U Project.



ALEX Learning Activities: 1

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ALEX Classroom Resources  
   View Standards     Standard(s): [MA2019] (4) 28 :
28. Identify two-dimensional figures based on the presence or absence of parallel or perpendicular lines or the presence or absence of angles of a specified size.

a. Describe right triangles as a category, and identify right triangles.
[MA2019] (5) 21 :
21. Classify triangles according to side length (isosceles, equilateral, scalene) and angle measure (acute, obtuse, right, equiangular).
[MA2019] (5) 22 :
22. Classify quadrilaterals in a hierarchy based on properties.
Subject: Mathematics (4 - 5)
Title: Varieties of Quadrilaterals
URL: https://aptv.pbslearningmedia.org/resource/vtl07.math.geometry.pla.lpquadril/varieties-of-quadrilaterals/
Description:

Bianca's friend Kim brings her a device for reaching objects while she's confined to her bed. The device is made up of collapsible parallelograms. The activity uses this episode to launch an investigation of different kinds of quadrilaterals (parallelograms, trapezoids, rectangles, squares, and rhombi) and the relationships among them.


   View Standards     Standard(s): [MA2019] (3) 26 :
26. Recognize and describe polygons (up to 8 sides), triangles, and quadrilaterals (rhombuses, rectangles, and squares) based on the number of sides and the presence or absence of square corners.

a. Draw examples of quadrilaterals that are and are not rhombuses, rectangles, and squares.
[MA2019] (5) 21 :
21. Classify triangles according to side length (isosceles, equilateral, scalene) and angle measure (acute, obtuse, right, equiangular).
[MA2019] (5) 22 :
22. Classify quadrilaterals in a hierarchy based on properties.
Subject: Mathematics (3 - 5)
Title: Classifying Quadrilaterals
URL: https://aptv.pbslearningmedia.org/resource/mkcpt.math.g.quadrilaterals/classifying-quadrilaterals/
Description:

In this video, examine strategies to identify the properties of quadrilaterals—specifically, parallelograms. Students will compare and contrast squares, rectangles, and rhombuses, which are all parallelograms. In the accompanying classroom activity, students create posters identifying the properties of various quadrilaterals. They explore how these shapes compare and contrast and then analyze the ways that parallelograms distinguish themselves from other quadrilaterals.


   View Standards     Standard(s): [MA2019] (5) 21 :
21. Classify triangles according to side length (isosceles, equilateral, scalene) and angle measure (acute, obtuse, right, equiangular).
Subject: Mathematics (5)
Title: Grade 4 Mathematics Module 4, Topic D, Lesson 13
URL: https://www.engageny.org/resource/grade-4-mathematics-module-4-topic-d-lesson-13
Description:

In this lesson, students will analyze and classify triangles based on side length, angle measure, or both.


ALEX Classroom Resources: 3

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