# Day 2: Paper Tower Blueprints

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## Objective

SWBAT: Design a solution for the paper tower challenge.

#### Big Idea

Designing possible solutions and picking the best one helps students develop analysis skills.

## Overview of Day 2

This video gives an overview of today's lesson:

The lesson continues to help students develop understanding of all MS-ETS standards, as well as practices 1 and 2.  Additionally, students use Crosscutting Concepts of patterns from their tower research to find common attributes that can be incorporated into their own towers.

## Sharing Ideas From Homework and Orthographic Projections

25 minutes

Now that students have information about various tower designs, they share their sketches from yesterday with their partner. After deliberating, they come up with their best possible solution and turn that design into an orthographic projection.

Prior to having students complete their orthographic projections, I use this link to demonstrate how one can create a 3D design on a piece of paper. Each group gathers a Chromebook and accesses the site. They then go through the animated explanation of orthographic projections and take notes in their notebooks.

We review the key points from their research and then students begin to finalize their designs, which will be turned into an orthographic projection. I have rulers readily available for this task. In addition, I ask students to identify where they will place their tape; this helps with tape management.

## Creating Orthographic Projections of Paper Tower Design

25 minutes

Now that students have an understanding of orthographic projections and scale, they must make one for their final tower design. I give students graph paper, rulers and compasses to create their drawings.

Students must get their designs approved by be prior to constructing their towers on day 2. Characteristics that I look for include: straight lines, neat handwriting, approximate measurements using the metric system and all 3 dimensions of the orthographic projection.

If students do not get their designs approved on day 2, we start with finalizing and approving designs at the beginning of day 3.