Contact
hello@mathazel.com
One address, read by a person. Say which of these it is and you will get a faster answer.
Access
You teach mathematics and want to use Hazel. Accounts open after data collection ends; ask and you will be told when.
Taking part
You train pre-service teachers, or you are one. Sessions are a single supervised sitting of about 90 minutes, and no identifying detail is entered into the system at any point. See the study.
The material
You want to use a task from the library, or you think one of them is wrong. Both are welcome, particularly the second. The exemplars are originally authored and the literature they draw on is cited.