Bruce ChittendenGovernor’s School for Science and Technology

Tidewater Community CollegeThomas Nelson Community College

ON THE USE OF TECHNOLOGIES SUCH AS ALICE, GREENFOOT, AND SCRATCH

TO TEACH COMPUTER SCIENCE TO HIGH SCHOOL STUDENTS

Origins of the Technology

Original Project Started

1997 2003 2007

Development TeamCarnegie Mellon

UniversityUniversity of Kent

(England)MIT

Team Lead Randy Pausch Michael Kolling Mitchel Resnick

First DevelopedUniversity of

VirginiaBlueJ Team

Lifelong Kindergarten

Group

Design and Usage

Original Design CollegeHigh School and

CollegeElementary School

Age pre-CS1/CS1 14+ years 8-16 years

Gender Girls Neutral Neutral

Typical UsageStorytelling and Games

Games and Simulations

Music Videos, Storytelling,

Games

Dimension 3D 2D 2D

Programming Methodology

Drag and Drop Text Based Java Snap Together

User InterfaceSingle Window

Multi-PaneMultiple Windows

for CodeSingle Window

Multi-Pane

Graphics Quality Professional Good Good

Programming Environment

Programming Paradigm

Object Oriented vs. Procedural

Object Oriented Object Oriented Procedural

OOP and JavaOne Level of Subclassing

Java Object ModelNo Classes or

Inheritance

IDE LayoutClasses, Methods,

Code, WorldClasses, World

Commands, Script, Sprites, Stage

Execution Method Interpretative Compiled Interpretative

Language and Platforms

Language Java Java Squeak (Smalltalk)

API for User Written Code

Coming in Alice 3.0

Java Smalltalk

PlatformsWindows, Mac,

LinuxWindows, Mac,

LinuxWindows, Mac,

Linux

Pre-Made ImagesHundreds Very

ProfessionalLimited

Significant Number

Alice IDE

Object Tree

ToolbarEvents Editor

World View

Details PanelMethod Editor

Alice Play

Storytelling Alice IDE

Storytelling

Storytelling Alice

Greenfoot IDE

World

Toolbar

Class Diagram

Compile

Open Editor

Method EditorOpen Editor

Scratch IDE

Command Pallet

Command Selection

Sprite

Scripts

StageStage

Scratch Presentation Mode

Learning

ThemesEncouraging and

EmpoweringEncouraging and

EmpoweringEncouraging and

Empowering

Learning Embodied

Between Scratch and Greenfoot

Teacher RoleLearn Entirely

thru Play

Transitional Relationships

Alice → GreenfootGreenfoot →

EclipseScratch → Alice

Projects On-Line Limited Several Hundred Several 100,000

Teacher Resources

Website www.alice.org www.greenfoot.org scratch.mit.edu

Share ProjectsNone by the Alice

Teamwww.greenfootgallery

.org scratch.mit.edu

Teacher Resources www.aliceprogramming.net

greenroom.greenfootorg scratch.mit.edu

Beginners Tutorials Few Few Excellent

Websites

Books

Greeps Competition

Greeps Final Score

Tidewater Community CollegeScore Student 1st 2nd 3rd 4th 5th

249 Teresa 224 242 249 223 229216 Mark 216 194 204 209 200167 Steven 161 167 167 160 164165 Andrew 161 158 165 160 164163 James 152 145 155 163 157156 Rondrae 152 153 151 155 156155 Mary 147 139 155 155 155154 Tyrance 149 152 133 151 154134 Andrew 118 134 124 115 121132 Ryan 110 132 127 129 115130 Joscelyn 125 94 105 115 130127 Kyle 118 127 116 127 121113 Thomas 109 103 94 113 104107 Stephen 105 105 87 99 107102 Jordan 100 101 90 102 9598 Troy 89 94 83 98 7328 Chequana 25 19 26 16 283 Jeffrey 1 3 1 1 10 Lindsey  0 Frank          

17 Number of Students 141 Average

Governor’s SchoolScore Student 1st 2nd 3rd 4th 5th

283 Kelly 271 264 247 246 283273 Frederick 238 222 248 249 273268 Austin 268 239 242 240 249258 Alexander 242 237 258 221 246249 Jaquan 230 226 232 236 249224 Ryan 206 208 218 224 206223 Bryce 222 206 216 202 223220 Mia 200 199 220 212 202218 Zachary 215 195 199 203 218217 Connor 217 206 190 193 201208 Zak 193 208 195 208 208201 Will 193 192 201 175 196199 Jacqueleen 191 192 199 179 183190 David 162 161 158 190 179190 Douglas 157 164 190 163 170188 Kevin 202 195 194 178 208184 Matei 178 182 177 167 184183 Emily 175 183 167 177 159182 Zachary 182 171 172 177 169177 Megan 162 163 177 163 173176 Chance 176 144 159 161 174176 Tiffany 169 165 167 176 172175 Eddie 159 160 172 168 175172 Kelvin 153 154 170 172 164168 Phillip 151 162 165 128 168167 Robert 150 167 153 147 143166 Hannah 157 149 166 161 154166 Graham 148 158 166 141 151

28 Number of Students204 Average

Classroom Experience

Questions