Authentic Lessons for 21st Century Learning

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K20 Center

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K20 Center

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Venn Diagram is an App/Web 2.0 by ReadWriteThink that provides an easy and quick way to create a digital Venn Diagram. Read more »

Tech Tool

Timetoast is a web-based tool that allows you to create interactive digital timelines. An account is required, but signing up is free. Read more »

Tech Tool

Storyboard That is an online storyboard creator with an easy-to-use drag and drop interface. It provides background scenes, characters, text bubbles and other resources needed to create an appealing visual sequence. There is a free and a paid version of this tool. Read more »

Tech Tool

DebateGraph is a robust concept mapping tool with a focus on breaking down complex issues into smaller components. It is designed for individuals to engage in open reasoning and collaborative learning. This is a free tool, but an account is required. Read more »

Tech Tool

A web 2.0 tool that allows users to upload and add interactive tags to a picture. The tags can pop up text, images, videos, and music. Read more »

Tech Tool

Storybird provides curated artwork to inspire creative writing. Students and teachers alike can create comic books, picture books, chapter books, poems, and short stories. A paid membership is required, but discounts for educators are available. Storybird is available as a web-based tool, an iOS app,... Read more »

Tech Tool

Timeline allows students to create a graphical representation of an event or process by displaying items sequentially along a line. Read more »

Tech Tool

This interactive tool allows students to create trading cards about a real or fictional person, place, object, event, abstract concept, or they can create a custom card. Prompts guide students through building each card, expanding students’ thinking from the basic information and description of the... Read more »

Tech Tool
Coffee and Corpses

Exponential Decay

Grade Level Grade Level

  • 10th - 11th

Students explore exponential functions by investigating exponential decay. Students should already have an introduction to exponential equations before starting this lesson. Read more »

Lesson 5E Lesson
Coffee and Corpses

Exponential Decay

Tag Related

  • Individual Career Academic Plan (ICAP)

Grade Level Grade Level

  • 10th - 11th

Course Course

  • Algebra 2

Subject Subject

  • Mathematics

Copied To Clipboard Standards

  • A2.F.1.4
More 2-3 class periods
Time Frame 150 minutes
Don't Be Irrational

Identifying and Classifying Numbers

Grade Level Grade Level

  • 10th - 11th

This lesson introduces identifying and classifying numbers with an emphasis on the subsets of real numbers. Students will recall proper and improper fractions, repeating and terminating decimals, integers, and counting numbers. Students will learn about the symbols used to represent complex, real, rational,... Read more »

Lesson 5E Lesson
Don't Be Irrational

Identifying and Classifying Numbers

Grade Level Grade Level

  • 10th - 11th

Subject Subject

  • Mathematics

Course Course

  • Intermediate Algebra
More 1-2 class period(s)
Time Frame 55-70 minutes