Lesson Plan

# STEM Bridge Building

How much weight can it take?
Brenda A.
Classroom teacher
Kearney West High School
Kearney, United States
My Grades 8, 9, 10, 11, 12
My Subjects Math
Objectives

Students will be able to...

Describe and identify four types of bridges commonely built.

Describe strength and weaknesses for each type.

Construct one of the four types of bridges with popcicle sticks and white glue within the given parameters that can support 20 pounds.

Subjects
Math
Science

#### 1 Hook

Day 1: I will provide the video for the students to watch to begin gathering information on how a bridge is built.  We will watch small parts of each section as the video is long and gets boring. Students do not need to take notes.

Student Instructions

Day 1: I will provide the video for the students to watch to begin gathering information on how a bridge is built.  We will watch small parts of each section as the video is long and gets boring. Students do not need to take notes.

#### 2 Direct Instruction

Day 2: Next the students will go to http://www.pbs.org/wgbh/nova/tech/build-bridge-p1.html to begin gathering information about each type of bridge.  This is also where they will learn the strength and weaknesses of each type of bridge. They will complete all the activities on this website.

The students will fill out the accompanying sheet with the information they gathered. 100 points.

Student Instructions

Day 2: Next the students will go to http://www.pbs.org/wgbh/nova/tech/build-bridge-p1.html to begin gathering information about each type of bridge.  This is also where they will learn the strength and weaknesses of each type of bridge. They will complete all the activities on this website.

The students will fill out the accompanying sheet with the information they gathered. 100 points

#### 3 Guided Practice

Activity: Drawing

Day 3: Next the students will spend one day sketching their bridge.  This should be a detailed sketch. It is worth 200 points.

Student Instructions

Day 3: Next the students will spend one day sketching their bridge.  This should be a detailed sketch. It is worth 200 points.

#### 4 Independent Practice

Activity: Creating

Days 4 & 5: Students will weigh 100g of sticks on a gram scale and use that amount of sticks to construct their bridge.  Only sticks and white glue are allowed. Bridges must be at 40 cm long and able to withstand 20 pounds of weight.

Student Instructions

Days 4 & 5: Students will weigh 100g of sticks on a gram scale and use that amount of sticks to construct their bridge.  Only sticks and white glue are allowed. Bridges must be at 40 cm long and able to withstand 20 pounds of weight.

#### 5 Wrap Up

Activity: Presenting

Day 6: We will take our bridges to the wood shop and put them on a drill press with a scale and measure the amount of weight they can withstand before collapsing.

Day 7: We will take the date we collected and calculate the weight of each bridge/amount of weight it could withstand.

Student Instructions

Day 6: We will take our bridges to the wood shop and put them on a drill press with a scale and measure the amount of weight they can withstand before collapsing.

Day 7: We will take the date we collected and calculate the weight of each bridge/amount of weight it could withstand.