Make math colorful! Solve equations straight from the end of the rainbow with Rainbow Calculators from Learning Resources. A fun colorful twist on our popular Primary Calculators, each set Rainbow Calculators comes with five vibrant colors—red, green, blue, orange or purple. There's one for every day of the school week! Add some color to your elementary math classes or brighten up the evening's homework! Although the colors may be whimsical, the Rainbow Calculators do serious work: use these four-function calculators to check addition, subtraction, multiplication and division equations on the eight-digit display, or discover more advanced calculations like square roots, percentages and more! Simple to use for beginners and powerful enough for older students, our Rainbow Calculators grow along with your skills. Each Rainbow Calculator operates with both solar and battery power, and also includes features such as auto shut-off, three-key memory and more. Perfect for teacher resources and school stores!