## Reflection: Student Self-Assessment Simple Machine Design Evaluation - Section 2: Explore

The students were asked to evaluate their own machines by answering the questions in the notes sheet. Looking at two separate machines, lever and wheel and axle, we can see how the students were proud of their machines and their success, but they were still able to suggest some edits and revisions.

The lever evaluation was successful in accomplishing the task, but they were experiencing some difficulties with the clay being too heavy for only one straw to maneuver it.  Their solution was to add a second straw to the handle. This proved successful in later attempts.  The wheel and axle evaluation had an issue with one of the wheels and their solution was to add more tape.  The tape didn't fix the problem, but it led them to their final solution which was to reshape the faulty wheel into a more perfect ball.

Student Self-Assessment: Student Self-Evaluations

# Simple Machine Design Evaluation

Unit 6: Simple Machines
Lesson 5 of 10

## Big Idea: The engineering process involves evaluation and reflection on the practicalities of the design. Students will evaluate their own design and that of their peers.

Print Lesson
6 teachers like this lesson
Standards:
Subject(s):
Science, Simple Machines, SPED, machines, physics
35 minutes

### Drewe Warndorff

##### Similar Lessons

###### Wind Turbine Blade Design Part 1: Define the Problem & Research Solutions
8th Grade Science » Engineering: Wind Turbines
Big Idea: In this first lesson of a unit on wind turbine blade design, students are presented with the problem of designing wind turbine blades that will produce the optimal amount of electricity.
Favorites(11)
Resources(16)
Brookline, MA
Environment: Urban

###### Using Rube Goldberg Simulation to Demonstrate Understanding of Energy Transformations
Big Idea: Learning science should be fun and meaningful and this lesson provides students with that opportunity.
Favorites(23)
Resources(12)
East Walpole, MA
Environment: Suburban

###### Penguin Homes
7th Grade Science » Thermodynamics and Heat Transfer
Big Idea: Using data collected as scientists, students will work as engineers using the engineering design process to build and test prototype homes for penguins.
Favorites(7)
Resources(14)
Hope, IN
Environment: Rural