Calculating the Hypotenuse in a right-angled triangle

Calculating the Hypotenuse in a right-angled triangle
Calculating the Hypotenuse in a right-angled triangle
Calculating the Hypotenuse in a right-angled triangle
Calculating the Hypotenuse in a right-angled triangle

What's Included

  • Smart Notebooks Presentation
  • Interactive Excel File
  • Activ Inspire Flipchart
  • Lesson Plan
  • Microsoft PowerPoint Presentation
  • Differentiated Worksheet

Calculating the Hypotenuse in a right-angled triangle

Students learn about calculating the hypotenuse in a right-angled triangle using Pythagoras' Theorem.  Using Pythagorean Triples students calculate the area of the square attached to each edge of a triangle to discover the relationship between the sides.At the start of the lesson students recap working with order of operations, squares and square roots.  The plenary challenges students to apply Pythagoras' Theorem to test whether a triangle is a right-angle or not.
Differentiated Learning Objectives
  • All students should be able to calculate the squared area of each edge of a right-angled triangle.
  • Most students should be able to calculate the hypotenuse length of a right-angled triangle.
  • Some students should be able to use Pythagoras’ Theorem to determine whether a triangle has a right-angle.
View online lesson
Lesson Downloads
Download PowerPoint Download Notebook Download Flipchart Download WorksheetDownload Interactive Excel File
Scheme of Work Link
Pythagoras' Theorem and Right-Angled Triangles 
IMMEDIATE DOWNLOAD

Mr Mathematics Blog

How Write 3 Part Ratios

When learning how to write 3-part ratios students need to understand how ratios can be made equivalent. The start of the lesson reminds students by asking which of six ratios is the odd one out.  This is presented to the class as they come into the lesson.    Writing Equivalent Ratios  A few students immediately go […]

Solving Inequalities using a Number Line

Students should be able to represent the solutions to an inequality on a number line, using set notation or as a list of integer values.  Here’s how I teach using the balance method for solving inequalities using a number line. Matching inequalities, Number sets and Number Lines At the start of the lesson students recap […]

Practical Tips for Using Mini-Whiteboards in a Mathematics Lesson

In this blog I will share some practical tips for using mini-whiteboards in a mathematics lesson.  I use mini-whiteboards nearly every lesson because they help the students show me the progress they are making.  When I understand what the misconceptions are I am able to address them in subsequent examples as part of my feedback.  […]