Authentic Lessons for 21st Century Learning

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Michell Eike

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K20 Center

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Recent Publications

Card Matching

Grade Level Grade Level

  • 6th - Undergraduate

This formative assessment strategy involves finding pairs (or sets) of cards that uniquely share the same relationship or attribute. Card decks do not need to have equal size groups, consider creating uneven matches, where there are more of one type of card than another, or creating some cards that... Read more »

Strategy Instructional Strategy

User Group Group Size

  • Small Group

Copied To Clipboard Placement In Lesson

  • Engage/Opening, Evaluate/Assessment

Time Frame Time To Complete

  • 10 - 20 Minutes, 20 - 30 Minutes

Tag Intention Or Purpose

  • Analyze, Critical Thinking, Interpret, Organize, Reason, Recognize, Reflection

Grade Level Grade Level

  • 6th - Undergraduate
My Imaginary Friend, Part 1

Understanding and Simplifying Imaginary Numbers

Grade Level Grade Level

  • 10th - 11th

In this lesson, students will be introduced to imaginary numbers and their history. Students will learn how to simplify the square root of a negative number and how to simplify i to a power. Before beginning this lesson, students need to (1) know how to simplify the square root of a whole number and... Read more »

Lesson 5E Lesson Online Hybrid
My Imaginary Friend, Part 1

Understanding and Simplifying Imaginary Numbers

Grade Level Grade Level

  • 10th - 11th

Course Course

  • Algebra 2

Subject Subject

  • Mathematics

Copied To Clipboard Standards

  • A2.N.1.1, A2.N.1.2
More 2 class periods
Time Frame 70 minutes
Designing Your Area

Area and Perimeter of Regular Polygons

Grade Level Grade Level

  • 9th - 10th

In this lesson, students will use their existing knowledge to find the area and perimeter of triangles, rectangles, and trapezoids to discover how to find the area of a regular polygon and apply their knowledge to real-world scenarios. Read more »

Lesson 5E Lesson
Designing Your Area

Area and Perimeter of Regular Polygons

Course Course

  • Geometry

Subject Subject

  • Mathematics

Grade Level Grade Level

  • 9th - 10th

Copied To Clipboard Standards

  • G.2D.1.6
More 2 periods
Time Frame 70-90 minutes
A Perfect Match

Congruent Polygons

Grade Level Grade Level

  • 9th - 10th

Students will explore the properties of congruent polygons and analyze how to apply those properties to solve problems. Read more »

Lesson 5E Lesson
A Perfect Match

Congruent Polygons

Course Course

  • Geometry

Subject Subject

  • Mathematics

Grade Level Grade Level

  • 9th - 10th

Copied To Clipboard Standards

  • G.2D.1.7
More 1-2 Periods
Time Frame 45-70 minutes