Sorry for taking so long to post this, but figured you'd want to know the following (received in an email from HeyMath! customer support):
- A major portion of our resources overlap in the US and Singapore editions as the content/concepts of mathematics across both the countries is almost similar. However, the content is indexed and categorized (class/grade levels) as per the curriculum in the respective country. Also, the content is customized to cater to the manner in which mathematics is taught in each of these countries, vocabulary /terminology variations and finally the advancement across different grade levels.
- Also, we have HeyMath! PRIME (Program from Raffles Institution for Mathematics Enrichment) which is targeted specifically at higher ability students. Developed in collaboration with Singapore's # 1 school Raffles Institution, HeyMath! PRIME combines HeyMath!'s expertise in innovative digital pedagogy and Raffles Institution's rigorous assessment methodology.
They very nicely offered to speak by phone, but I haven't had time. Meanwhile, this may help some of you.
p.s. - the PRIME program does include calculus.
