# Lehua HIDOE

Educator
34 saved resources

# Scale Factorunavailable

(View Complete Item Description)

It seems commonsense that when the dimensions of an object are doubled, the area is doubled as well. You can use this applet to investigate this misconception. Students can see how changes in the scale factor influence the ratio of perimeters and the ratio of areas between two figures.

Material Type: Interactive, Lesson Plan

# Island of the Little

(View Complete Item Description)

In this Cyberchase video segment, the CyberSquad is on the Island of the Little and must scale up a small boat that will fit Widgit. ***Access to Teacher's Domain content now requires free login to PBS Learning Media.

Material Type: Lecture

# How Long Will It Take?unavailable

(View Complete Item Description)

In this lesson, students will participate in a group activity using a sponge ball and a growing human circle. The students will be added to a circle in groups of two and will pass the sponge ball from hand to hand until it returns to the "starting" hand; all while being timed. The data will be recorded each time a new group is added to the circle. At the end of the activity the students will be able to construct a scattered plot, using Illuminations, as well as, make a prediction about the future. This activity will help students interpret relative frequencies.

Material Type: Lesson Plan

# Rotation of a triangleunavailable

(View Complete Item Description)

In this activity, you will explore the various properties of the rotation of a triangle.

Material Type: Simulation

# Building and Solving Equations 1

(View Complete Item Description)

This lesson unit is intended to help teachers assess how well students are able to create and solve linear equations. In particular, the lesson will help you identify and help students who have the following difficulties: solving equations with one variable and solving linear equations in more than one way.

Material Type: Assessment, Lesson Plan

# Identifying Similar Triangles

(View Complete Item Description)

This lesson unit is intended to help you assess how students reason about geometry and, in particular, how well they are able to: use facts about the angle sum and exterior angles of triangles to calculate missing angles; apply angle theorems to parallel lines cut by a transversal; interpret geometrical diagrams using mathematical properties to identify similarity of triangles.

Material Type: Assessment, Lesson Plan

# Solving Linear Equations in One Variable

(View Complete Item Description)

This lesson unit is intended to help teachers assess how well students are able to: solve linear equations in one variable with rational number coefficients; collect like terms; expand expressions using the distributive property; and categorize linear equations in one variable as having one, none, or infinitely many solutions. It also aims to encourage discussion on some common misconceptions about algebra.

Material Type: Assessment, Lesson Plan

# Repeating Decimals

(View Complete Item Description)

This lesson unit is intended to help teachers assess how well students are able to: translate between decimal and fraction notation, particularly when the decimals are repeating; create and solve simple linear equations to find the fractional equivalent of a repeating decimal; and understand the effect of multiplying a decimal by a power of 10.

Material Type: Assessment, Lesson Plan