## Reflection: Backwards Planning Where Do These Nails Go? - Section 1: How to Build a Bat House

This is a big lesson, as well as a big part of a large unit that takes place over many days.  The students will be constructing a bat house at the end of the unit, but today they need to make some decisions about its construction.

It would have been a mistake for me to not show them the end result before they began.  However, I was very careful to show what we were working towards without giving information that would sway their mathematical thinking. There was a fine line here in the backwards planning.

It is critical that students know what is expected of them and of the project, but I did not want my modeling to be an answer…only a guide.

Why Model
Backwards Planning: Why Model

# Where Do These Nails Go?

Unit 11: Going Batty Over Measurement and Geometry
Lesson 7 of 14

## Big Idea: Students deserve and need opportunities to work with their knowledge inside of a real life situation that means something to them. This unit, and this lesson, requires students to apply many of this school year's skills.

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Standards:
Subject(s):
Math, Measurement, Geometry, Measurement and Methods, division, model with math, perimeter, interval, Rich Task, shapes
60 minutes

### Michelle Marcus

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