21st Century Lessons: A Boston Teachers Union Initiative's picture

21st Century Lessons: A Boston Teachers Union Initiative 

21stCenturyLessons builds some of the best free lessons on the Internet. Visit www.21stcenturylessons.org for links to our content, the full scope and sequence of our units, or to get more information about us.

21stCenturyLessons is an OER collaborative started by a group of teachers in the Boston Public Schools with the help and support of the Boston Teachers Union and the AFT Innovation Fund. Since 2011 we have created 160+ lessons here on ShareMyLesson. Our lessons are created by teams of expert teachers who still work in the classroom, and each comes with everything a teacher needs to deliver a great lesson.

Facebook
Twitter
Pinterest
LinkedIN
email
sharethis
Resources 169
Views 842,893
Downloads 529,444

169 items

Order of Operations Day 1 (of 2)
  • Math
  • Middle School
Common Core
This is the first lesson of a unit series on the order of operations. This lesson is an exploration around the order of operations with practice. The...
Introduction to Ratios
  • Math
  • Middle School
Common Core
This introduction to ratios lesson plan will start with reviewing simplifying fractions and then ask students to represent real-world situations as...
Writing Algebraic Expressions Day 1 (of 2)
  • Math
  • Middle School
Common Core
This lesson is the third part of the entire unit and the first of two lessons where students will start writing algebraic expressions. This lesson is...
Writing Algebraic Expressions Day 2 (of 2)
  • Math
  • Middle School
Common Core
Part four of the whole unit, this is the second lesson where students will continue their learning of translating written expressions and writing...
Area Lesson Day 6 - Quiz and Area Practice
  • Math
  • Middle School
Common Core
The main focus of this lesson is for students to be able to apply their knowledge of area to real-world situations. The two primary elements of this...
Introduction to Integers
  • Math
  • Middle School
Common Core
Integer Operations. This is the fourth lesson from the Number Sense unit. This lesson is designed to help students understand and use positive and...
Introduction to Tape Diagrams
  • Math
  • Middle School
Common Core
This lesson begins with a review of what a ratio is and has students identify various ratios for a given situation. They will also watch a short...
Order of Operations Day 2 (of 2)
  • Math
  • Middle School
Common Core
This is the second lesson in the whole unit and it covers all aspects of the order of operations. The main objective of this lesson, besides more...
Area of a Parallelogram
  • Math
  • Middle School
Common Core
The overarching design of this lesson plan and worksheets is to launch students on a brief and somewhat directed explore time on how to decompose and...
Area of Right Triangles
  • Math
  • Middle School
Common Core
This is a constructivist lesson that will help students connect their previous knowledge about the area of rectangles with the area of right...