Virtual Base Ten Blocks[br]1. Math Learning Center: https://apps.mathlearningcenter.org/number-pieces/[br]2. Cool math 4 kids: https://www.coolmath4kids.com/manipulatives/base-ten-blocks[br][br]Paper Base Ten Blocks & Reader[br]3. https://www.geogebra.org/m/y4jwa8g8