Concept of Congruency, Similarity, and Equivalency Manual with Lesson PlansProve the concepts of congruency, similarity, and equivalency sensorially and numerically. Save yourself HOURS of work.This is Unit 1: The Concept of Congruency, Similarity, and Equivalency This resource is relevant to ANY child, regardless of whether they have been in a Montessori environment or not. It is suitable for parents and/or teachers and perfect for homeschooling. 12 concept lessons/presentations featuring backg