Computer
game: Equivalent Fractions -http://www.sheppardsoftware.com/mathgames/fractions/memory_equivalent1.htm
https://www.ixl.com/math/grade-4/equivalent-fractions
http://www.sheppardsoftware.com/mathgames/fractions/equivalent_fractions_shoot.htm
http://www.mathplayground.com/Triplets/Triplets.html
http://www.abcya.com/equivalent_fractions_bingo.htm
http://pbskids.org/cyberchase/math-games/melvins-make-match/
Ratios -
http://www.softschools.com/math/ratios/ratio_game/
http://mathsnacks.com/ratiorumble_game_en.html
http://www.mathplayground.com/ASB_RatioMartian.html
equivalent ratios-
http://nrich.maths.org/4824
http://www.arcademics.com/games/ratio-blaster/ratio-blaster.html
http://mathsnacks.com/ratiorumble_game_en.html
http://www.mathplayground.com/ASB_RatioStadium.html.
http://www.abcya.com/equivalent_fractions_bingo.htm
http://pbskids.org/cyberchase/math-games/melvins-make-match/
Ratios -
http://www.softschools.com/math/ratios/ratio_game/
http://mathsnacks.com/ratiorumble_game_en.html
http://www.mathplayground.com/ASB_RatioMartian.html
equivalent ratios-
http://nrich.maths.org/4824
http://www.arcademics.com/games/ratio-blaster/ratio-blaster.html
http://mathsnacks.com/ratiorumble_game_en.html
http://www.mathplayground.com/ASB_RatioStadium.html.