Hand Mixer

ACTIVITY HEADER

 

 

 

Name of Activity

Hand Mixer

Author

Kara Miranda

Keywords

hand mixer, gears, gear ratios, not classroom tested, prototype, Engineering Design Process, 4-6, 7-9, 2 Hours Total

Subject

NXTs

Grade Level

4, 5, 6, 7, 8, 9+

Time

2 Hours Total

Brief Description

Students will design and build a hand mixer, learning how to use different gears in a variety of ways. *NOTE: not classroom tested.

Lesson Objectives:

To apply building techniques and knowledge about gears to an activity challenge.

Materials Needed:

RCX or NXT LEGO kits

Photos of different hand mixer designs

Assortment of extra LEGO pieces, especially gears and beams

Building Design Sheet

Preparation and Set Up:

Collect necessary materials

Photocopy worksheets

Arrange students into groups of 3

Decide how you will distribute extra pieces

Write design requirements on the board

Necessary Background

Review Gears and Gear Ratios

Vocabulary:

Prototype

Engineering Design Process

Gears

Gear Ratios

Procedure

  • Tell students that in this challenge they will be building a hand mixer.
  • Show students different pictures and/or videos of hand mixers, explaining what they do and how they work. Also, it may be a good idea to review how gears work. Explain the engineering design process, emphasizing prototype and redesign.
  • Tell them the requirements for their hand mixers. For example:
  •      Must have at least three gears
  •      Can be a manual or electric hand mixer
  • Allow the class to brainstorm different ideas for their mixer design. Have them plan out and draw their design on the Building Design Sheet.
  • Distribute materials and have students start building.
  • After the students finish, review the activity with the class. Have them share their ideas, ask groups to explain what the hardest part of the challenge was, etc.

Extensions:

Have students add more gears.

Have students make the bottom of their hand mixer spin faster or slower by adjusting the gear ratio.

Reference 1

http://sites.tufts.edu/stompactivitydatabase/files/formidable/109_image_1.jpg

Reference 2

http://sites.tufts.edu/stompactivitydatabase/files/formidable/109_image_2.jpg

Reference 3

http://sites.tufts.edu/stompactivitydatabase/files/formidable/Building-Design-Sheet.pdf

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