Building Circuits

http://www.engineeringinteract.org/resources/siliconspies/flash/concepts/buildingcircuits.htm

Engineering Is Awesome

Science Rocks

http://www.bbc.co.uk/schools/ks2bitesize/science/physical_processes/

Catapult Design Team

http://www.forgefx.com/casestudies/prenticehall/ph/catapult/design-test-simulation.htm

Virtual Electron Microscope

http://school.discoveryeducation.com/lessonplans/interact/vemwindow.html

Simple Machines

http://www.msichicago.org/fileadmin/Activities/Games/simple_machines/

Robot Factory

http://www.wonderville.ca/v1/activities/robot_factory/index.html

Physics Projects for Kids

http://www.historyforkids.org/scienceforkids/physics/activities.htm

Science Bob Videos and Experiments

http://www.sciencebob.com/index.php

Educational Videos

http://pbskids.org/video/  

Once you get to PBS, click on  "Browse Videos" and then hit ...."Topics" and select a great technology or science video.

Real Scientists Are Awesome

http://pbskids.org/dragonflytv/scientists/

Simple Machines

http://www.mikids.com/Smachines.htm

Discover Engineering

http://www.discoverengineering.org/

Simple Circuits

http://www.engineeringinteract.org/resources/siliconspies/flash/concepts/simplecircuits.htm

Antibiotic Attack

http://www.sciencenetlinks.com/interactives/antibiotic.html

Marble Mania

http://www.sciencenetlinks.com/interactives/marble/marblemania.html

Phases of The Moon

http://www.sciencenetlinks.com/interactives/moon/moon_challenge/moon_challenge.html

Body Systems

http://www.sciencenetlinks.com/interactives/systems.html

Capture The Power

http://www.sciencenetlinks.com/interactives/powerplay.html

Number Puzzle Challenge

http://www.sciencenetlinks.com/interactives/numbercruncher.html

Gravity

http://www.sciencenetlinks.com/interactives/gravity.html

Earth Changing Erosion

http://www.sciencenetlinks.com/interactives/forces.html

Science Fun

http://www.sciencenetlinks.com/interactives/class.html

Back To the Moon

http://www.nasa.gov/audience/forkids/kidsclub/flash/visionfeature/Vision.html

Kid's Zone Ag

http://www.agclassroom.org/kids/index.htm

Generating Electricity

http://www.bbc.co.uk/schools/gcsebitesize/science/aqa/energy/mainselectricityact.shtml

Brain Stimulation

http://www.edheads.org/activities/brain_stimulation/swf/index.htm

Learning Curcuits

http://www.learningcircuits.co.uk/flashmain.htm

Curcuits and Conductors

http://www.bbc.co.uk/schools/scienceclips/ages/8_9/circuits_conductors_fs.shtml

Friction

http://www.bbc.co.uk/schools/scienceclips/ages/8_9/friction_fs.shtml

Sorting and Using Material

http://www.bbc.co.uk/schools/scienceclips/ages/5_6/sorting_using_mate_fs.shtml

Revesible and Irriversible Changes

http://www.bbc.co.uk/schools/scienceclips/ages/10_11/rev_irrev_changes_fs.shtml

Gases Around Us

http://www.bbc.co.uk/schools/scienceclips/ages/9_10/gases_fs.shtml

Materials Matter

http://www.e-gfl.org/e-gfl/custom/resources_ftp/client_ftp/ks2/science/material_matters/index.htm

Characteristics of Materials

http://www.bbc.co.uk/schools/scienceclips/ages/7_8/characteristics_materials_fs.shtml

Reporting The Weather

http://www.edheads.org/activities/weather/frame_loader.htm

Collecting The Evidence at A Crash Scene

http://www.edheads.org/activities/crash_scene/swf/index.htm

Virtual Hip Surgery

http://www.edheads.org/activities/hip/swf/index.htm

Design A Cell Phone

http://www.edheads.org/activities/eng_cell/swf/index.htm

Compound Machines

http://www.edheads.org/activities/odd_machine/frame_loader.htm

Select the Gradient To Travel The Farthest

http://www.bbc.co.uk/schools/ks2bitesize/science/physical_processes/forces_action/play_popup.shtml

Selecting The Best Thermal Insulator

http://www.bbc.co.uk/schools/ks2bitesize/science/materials/keeping_warm/play_popup.shtml

Parkworld

http://www.engineeringinteract.org/resources/parkworldplot.htm

Ocean Odyssey

http://www.engineeringinteract.org/resources/oceanodyssey.htm
Challenges about sound.

Alien Attack

Help save the Earth!
http://www.engineeringinteract.org/resources/alienattack.htm

Electricity Game

Enjoy the variety of challenges that involve changing the circuit, moving switches, replacing bulbs, changing the battery volts and adding longer wires. Kids will have fun with this interactive electricity game.

http://www.bbc.co.uk/schools/scienceclips/ages/6_7/electricity_fs.shtml
http://www.bbc.co.uk/schools/ks2bitesize/science/physical_processes/circuits_conductors/play_popup.shtml

Goldburger To Go

http://pbskids.org/zoom/games/goldburgertogo/rubegame.html

Machines That Make Life Easier

http://www.schools.utah.gov/curr/science/sciber00/8th/machines/sciber/intro.htm

Simple Machines Video

http://videos.howstuffworks.com/hsw/16886-compound-machines-the-six-simple-machines-video.htm

Simple Machines

http://www.edheads.org/activities/simple-machines/frame_loader.htm