During a school closing, Happy Numbers is here to work with you to ensure the uninterrupted education of PK-5 students. We’ll help you deliver quality math instruction and monitor progress and math growth - all remotely. Happy Numbers is offering our solution for free to all teachers through the end of the school year. Free Services Offered: Fee access to Happy Numbers for any PK-5 Teacher. Happy Numbers helps PK-8 grade teachers differentiate instruction and deepen students’ conceptual understanding of math. We teach students to think math with elements such as visual modeling, virtual manipulatives and multiple representations of math concepts to give students the opportunity to explore the meaning behind the math, creating connections, and developing deep conceptual understanding.