Contributors

Ionut Cosmin Andrei and Vasile Costinel Ciucardel (2012)
Rendering form development (AnimatedStars, AdditionAndSubtractionOfCoins)
Bogdan-Mihai Cataron (2012)
Rendering form development (ProperFractionsAsSquareParts, ShadeCircleParts, ShadeSquareParts)
Bogdan Duca (2012)
Rendering form development (NumberRay, ProperFractionsAsSquareParts, ShadeCircleParts, ShadeSquareParts)
Linda Eckardt (2012)
Fraction problem type and rendering form development (FractionEquation, FractionExtendAndReduce, ProperFractionsAsCircleParts, SizeComparison)
Maria Hentzschel and Marcus Uhlig (2012)
Rendering form development (AdditionWithAnimatedDice)
Tilo Michelchen (2013)
Rendering form development (AnimatedMultipleChoice)
Denny Nguyen Tong (2013)
Rendering form development (ShootingUFOs)
Vitaly Sobur (2013)
Rendering form development (AnimatedMultipleChoice)
Gerd Wagner (2011-2013)
Project design and co-ordination, prototype development, rendering form development (ComputationHouse, IndividualEquation, InverseOperation, Memory)

Images

"smiley of a green alien"
© 2007 Mariana Ruiz.

Music/Sounds

"SNAPPY"
© 2011 Jason Shaw.
"Blast"
© 2009 Mike Koenig. (http://soundbible.com/538-Blast.html)
"Explosion Ultra Bass"
© 2011 Mark DiAngelo. (http://soundbible.com/1807-Explosion-Ultra-Bass.html)
"Laser Cannon"
© 2011 Mike Koenig. (http://soundbible.com/1771-Laser-Cannon.html)
"Laser"
© 2009 Mike Koenig. (http://soundbible.com/1087-Laser.html)
"Sad Trombone"
© 2011 Joe Lamb. (http://soundbible.com/1830-Sad-Trombone.html)
"Ta Da"
© 2009 Mike Koenig. (http://soundbible.com/1003-Ta-Da.html)