The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From C-STEM Teacher and Student Support Service:
Our mission is to reduce achievement gaps impacting underrepresented children through focused teacher training and real-world application of learning for students through the integration of communication,science,technology,engineering,and mathhematic (CSTEM) in grades K-12
