Judo Bots



Get ready to R-R-RUMBLE!! Students can use the power of hydraulic cylinders (no syringe!) to design, build and battle their very own Judo-Bot. Using TeacherGeek components and recycling bin innovation, they can engineer new methods to move bots up, down and side-to-side to best tip or push opponents out of the ring. Exploring concepts of force, balance, momentum, mechanical advantage and robotics with end effector designs, bots are a truly comprehensive STEM activity. 

Make It Your Own: The documents for this activity are available in PDF and Microsoft Word format.
If you wish to edit a document, simply download the Microsoft Word format.

Document Downloads


This build guide has everything you need to construct an example Judo-Bot, along with your own designs, through the Engineering Process. Perfect for libraries, boy and girl scouts, science fairs, kitchen table, maker fairs and after school use.

Build Guide - PDF
Build Guide - Editable Word Document


Learn all about hydraulic and pneumatic power systems in the Fluid Power Lab. There is an answer key for the lab activity as well. Don't worry, the PDF is password protected. Use the code included with your order.

Fluid Power Lab - PDF
Fluid Power Lab Answer Key - PDF, password-protected



R-R-Rumble! Challenge - PDF

R-R-Rumble Challenge - Editable Word Document

Heavy Weight Challenge - PDF
Heavy Weight Challenge - Editable Word Document

Pick & Sort Challenge - PDF
Pick & Sort Challenge - Editable Word Document


Download the Classroom Overview

Classroom Overview - PDF
Classroom Overview - Editable Word Document




Download the TeacherGeek Engineering Notebook

Available at two different learning levels, the TeacherGeek Engineering Notebook is designed to help students cycle through the Design & Engineering Process and help them innovate and invent new designs. Use an Engineering Notebook page for each iteration of design.
It is recommended that extra pages are printed and on-hand during activities.

Simple Engineering Notebook - PDF
Judo-Bot Engineering Notebook - PDF


Judo Bot Components

What's in the Judo Bots Activity?


10pk Quantity:

Single Quantity:

Connector Strips






4.5ml Cylinder Assemblies



Perpendicular Blocks



2ft Vinyl Tubing



1" Screws 60 6
Hex Nuts 60 6
Cylinder Screws 40 4
75mm (3") Slide Stop 10 1
Zip Ties 40 4


This is an educational product and not a toy. It is intended for use by ages 8 and above with adult supervision.

Science & Math Standards

TeacherGeek products fit proposals, grants or lesson plans with ease! Explore more resources below:

Next Generation Science Standards
NGSS Standards Download - PDF
NGSS Standards Spreadsheet - Editable /Searchable Excel Sheet

International Technology & Engineering Educators' Association Standards
ITEEA Standards Download - PDF
ITEEA Standards Spreadsheet - Editable/Searchable Excel Sheet