This package contains 232 cards (116 vocabulary words and 116 definitions) for fourth grade math vocabulary. They are color coded according to the topic they are related to. Blue cards are Numbers in Base Ten. Yellow and Pink are Operations and Algebraic Thinking. Green cards are customary measurement. Purple cards are metric measurement. Orange cards are fractions and decimals. Red cards are geometry. These can be used in small groups for matching games, or used as a center activity.