"Illustrative Math is a problem-based core curriculum designed to address content and practice standards to foster learning for all. Students learn by doing math, solving problems in mathematical and real-world contexts, and constructing arguments using precise language. Teachers can shift their instruction and facilitate student learning with high-leverage routines to guide learners to understand and make connections between concepts and procedures."
IXL: students can practice suggested targeted skills
iREADY Math: Math lessons on their level
Google Classroom skip counting videos: help your mathematician learn their multiplication facts through song!