Description

SI Manufacturing MFG Place Value Twisters can be used in a variety of ways to perform many different arithmetical operations. There are four labelled cups plus one arrow cup in the set. Color-coded printing on the cups provides students with a visual representation of place value (thousand, hundred, tens and ones). Clockwise direction represents addition while counter clockwise direction represent subtraction. Teachers can select the appropriate number of cups for different grade levels. Grades 5 and up.