Another website in this vein is https://www.maria.cloud/ which is more geared up for teaching complete beginners programming, but I think with the basic paredit style controls and the evaluate-each-form-at-a-time style is I think a lot more realistic to the kind of REPL driven development that you actually use — typing directly into the REPL terminal window is very unergonomic imo. You’re much more likely to use something like VSCode’s Calva or emacs’ cider to send the form under the cursor to a REPL process somewhere.