▁ ▁Long , ▁L ., ▁Del ight ful ▁Dec im als ▁and ▁Per fect ▁Per c ents , ▁Games ▁and ▁Activ ities ▁That ▁Make ▁Math ▁E asy ▁and ▁Fun , ▁John ▁W iley ▁and ▁S ons , ▁New ▁York , ▁ 2 0 0 2 ▁ ▁Long , ▁L ., ▁Gro ovy ▁Ge ometry , ▁Games ▁and ▁Activ ities ▁That ▁Make ▁Math ▁E asy ▁and ▁Fun ! ▁John ▁W iley ▁and ▁S ons , ▁New ▁York , ▁ 2 0 0 3 ▁ ▁Long , ▁L ., ▁Me asure ment ▁Man ia , ▁Games ▁and ▁Activ ities ▁That ▁Make ▁Math ▁E asy ▁and ▁Fun ! ▁John ▁W iley ▁and ▁S ons , ▁New ▁York , ▁ 2 0 0 1 ▁ ▁Long , ▁L ., ▁Fab ul ous ▁Fra ctions , ▁Games ▁and ▁Activ ities ▁That ▁Make ▁Math ▁E asy ▁and ▁Fun ! ▁John ▁W iley ▁and ▁S ons , ▁New ▁York , ▁ 2 0 0 1 ▁ ▁Long , ▁L ., ▁D azz ling ▁Division , ▁Games ▁and ▁Activ ities ▁That ▁Make ▁Math ▁E asy ▁and ▁Fun ! ▁John ▁W iley ▁and ▁S ons , ▁New ▁York , ▁ 2 0 0 0 ▁ ▁Long , ▁L ., ▁Marvel ous ▁Mult ip lication , ▁Games ▁and ▁Activ ities ▁That ▁Make ▁Math ▁E asy ▁and ▁ ▁Fun ! ▁John ▁W iley ▁and ▁S ons , ▁New ▁York , ▁ 2 0 0 0 ▁ ▁Long , ▁L ., ▁P ain less ▁Ge ometry , ▁Bar ron ' s ▁Publish ers , ▁H