01 / ATTEMPT
Work through the code
Read a precise task, submit your own attempt and inspect its observed result.
A RESEARCH PROJECT IN COMPUTING EDUCATION
Understand the error.
Find the next step.
A closer look at how learners revise code, explain their reasoning and decide what to try next.
Independent records · Saved progress · English materials
02 / REVISE
Take another look
A neutral reminder starts one timed revision opportunity. Your work is saved separately.
03 / EXPLAIN
Make reasoning visible
Complete focused questions with separate fields for the answer and your explanation.
TWO TASK FAMILIES
Accumulate a total. Find the first match.
Short Python functions with explicit input domains and more than one possible correct solution.
Research in progress. Invitations specify whether a record belongs to a rehearsal or a released study batch. No automated teaching-need judgment is assigned.
METHOD & CAPABILITIES
A complete record,
one step at a time.
01
Your own workspace
Invitation-based access keeps each person's tasks and responses separate. Re-enter your invitation to continue on another device.
02
One timed revision
The server starts the 90-second window when your visible browser acknowledges the reminder. Refreshing does not restart it. An unconfirmed submission can be safely retried.
03
Answers and explanations
Diagnostic questions follow the revision. A separate verification stage follows the locked online stage. No answer key is displayed during either stage.
04
Enter workspace →Records for independent review
Researchers can export event records and a separate coding packet. Reference judgments remain empty until an independent review is completed.
DEVELOPMENT NOTES
A clearer path
from page to evidence.
v2.1
One website, separate participant records
The overview and workspace now share a single entry point. This candidate adds versioned study information, participation decisions, background questions, ordered tasks and separate prediction and outcome exports.
v1.8
New English materials
Filtered accumulation and first-match tasks have computationally checked author materials. Independent curriculum review and form-equivalence assessment remain pending.
NEXT
Deployment and formal study readiness
Server acceptance and the final study protocol are separate release requirements. Predictions are prepared offline after collection. Formal batches can only be issued after the researcher records the required release evidence.
PYTHON PRACTICE / WORKSPACE
Your next attempt.
Not signed in
Continue with an invitation
Use the code supplied by your researcher. Keep it private; it provides access to your saved workspace.
Study information and your choice
For questions or removal requests, use the researcher contact in your study information.
Complete the tasks in the assigned order. Your existing attempt resumes automatically. Use your own reasoning; do not use AI assistance, websites or help from others.
01 Attempt02 Revise03 Explain & diagnose04 Verify
The revision outcome is now saved. Describe what you changed and why, or state that you are unsure.