A collection of handouts, worksheets and other documents to help teach Computer Science and Engineering concepts.
These materials primarily target middleschool students (6th  8th grade), but most can be used without modification for younger or older students.
Number Systems  Counting
Materials for teaching binary, octal, decimal and hexadecimal.
Octal countingThese worksheets introduce the students to a nondecimal number system (in this case, octal) by having them count objects in both octal and decimal. 
Octal dotsThis worksheet has the students take an octal number and draw that many dots. After finishing, they count the number of dots in decimal to check their answer. 
Counting in octalIn this simple worksheet, the student counts from 0 to 77 in octal (which corresponds to 0 to 63 in decimal). 
Counting in binaryIn this worksheet, the student counts from 0 to 111111 in binary (which corresponds to 0 to 63 in decimal). 
Counting in HexadecimalIn this worksheet, the student counts from 0 to 63 (but in hexadecimal, so it's really 0 to 4F). 
Number cards (Binary, Octal, Decimal, Hexadecimal)Playingcard sized cards that can be used to compare the different number systems. 
Number Systems  Converting
Materials for teaching converting between binary, octal, decimal and hexadecimal.
Converting from binary to decimalWorksheet showing how to convert from binary to decimal. 
Converting from decimal to binaryWorksheet showing how to convert from decimal to binary. 
Converting from binary to octalWorksheet showing how to convert from binary to octal. 
Converting from binary to hexadecimalWorksheet showing how to convert from binary to hexadecimal. 
Converting between binary and hexadecimalWorksheet to practice converting between binary and hexadecimal. 
Binary Magic Tricks and Puzzles
Magic tricks and puzzles related to binary numbers.
Binary magic trickA set of 6 cards for a simple magic trick where you guess the secret number chosen by a student. Understanding the trick requires knowledge of binary. 
Perfect Card Shuffling (Binary)Knowledge of binary numbers and the ability to perform 'perfect shuffles' can allow you to shuffle the top card down to any desired position in the deck. 
Crossbin puzzles (Binary, Hexadecimal)These are "crossword" puzzles where the clues are in hexadecimal and the answers are binary numbers. When the puzzle is complete, the grid forms a simple black & white image. 
Encoding Data
How data is encoded for computers.
Encode/Decode a text messageWorksheets to encode/decode a text message. 
Decode an ASCIIencoded text messageDecode a text message encoded using ASCII. You'll need to provide an ASCII chart for use with this sheet. 
BMP encodingHow a simple BMP image is encoded. 
Bitmaps (Binary, Hexadecimal)Worksheets to encode black and white images as binary numbers. 
Boolean Logic
(Worksheets AND TeacherNotes) for (Teaching OR Practice OR Homework)
Object PropertiesAssign boolean properties to objects and then use those properties to select a subset of the objects. 
Boolean Logic : NethackReview of basic boolean operations using examples from Nethack. 

Venn DiagramsUsing Venn Diagrams to represent the boolean operations. 
Boolean Operations to Venn DiagramsWorksheets for converting boolean expressions into Venn Diagrams. 
Venn Diagrams to Boolean OperationsWorksheets for converting Venn Diagrams into a boolean expression. 
Transistors
Worksheets for use with wooden transistor tiles (free designs available for lasercutting) to teach how logic gates are built from transistors.
nMOS, pMOS and CMOS Info

CMOS Inverter InfoHow an invertor can be built from an nMOS and a pMOS transistor. 

CMOS InverterStudents build a inverter (NOT gate) using 1 set of transistor tiles. 
CMOS NANDStudents build a NAND gate using 2 sets of transistor tiles. 
CMOS NORStudents build a NOR gate using 2 sets of transistor tiles. 

CMOS Inverter (no tiles)Same as CMOS Inverter but without the tile outlines. 
CMOS NAND (no tiles)Same as CMOS NAND but without the tile outlines. 
CMOS NOR (no tiles)Same as CMOS NOR but without the tile outlines. 
Logic Gates
Gate Symbols 
Logic Gates 
Logic Gates  Test 
Universal Gates  NAND 
Lighten Up 
Lighten Up (Answer Key) 
Equivalent Circuits 
Equivalent Circuits (Answer Key) 
How To Add
How computers perform addition. Some of these worksheets are intended to be used with wooden logic gate tiles (free designs available for lasercutting).
Single Digit AdditionSingledigit base10 addition table. Reminder of what the students learned in elementary school. 
Sum and Carry TablesTraditional base10 addition table broken into separate sum and carry tables. 

Binary Addition TableBinary equivalents for the base10 addition tables. 
Half AdderConstructing a halfadder using logic gates. 
Full Adder & Ripple CarryBuilding a full adder from 2 half adders (with a ripple carry). 
Full Adder TilesTiles for building a full adder. 
General Computer Science
Materials on general computer science topics.
How Computers WorkAn activity for 3 students to act out the various parts of a computer: CPU, ALU/Memory and Display. 
How the Internet WorksAn activity for a group of students to act out the various parts of the internet: websites, routers, nameservers, ISPs and home computers. 
HTML
Support materials for teaching HTML.
HTML TagsThe most basic HTML tags: <b> and <i>. 
Simple HTML DocumentA simple (but complete) HTML document. 
Common HTML TagsA list of common HTML tags. 
FontsTypeface and font characteristics. 
HTML ColorsHow HTML colors are encoded as hexadecimal RGB (redgreenblue) values. 
JavaScript
Materials for learning how to program in JavaScript. Students create a simple platformjumping game using the <canvas> tag (and a bunch of JavaScript, of course).
Adventures in JavaScriptAn online "branching path book" that shows you how to write a canvasbased JavaScript game (a classic platformjumping game) during the course of the adventure. 
The Legend of JavaScriptThis is a playable version of the game that the students will create in the Adventures in JavaScript activity. 