The National Library of Virtual Manipulatives has several interactive manipulatives to help students practice their skill at identifying and extending numerical and geometric patterns. They include numbers and operations, with a focus on algebra and geometry for older students. Among the interactives are attribute trains that use patterns of shape and color, block patterns in tables, plots and graphs, Pascal's triangle, pentominoes, polyominoes, a rationals number triangle, and tangrams to name a few.
NLVM Math Patterns has a total of 19 interactives, with skills targeted by grade level. These manipulatives include guidance for teachers on their use in the classroom.
