This was my favorite lesson yet! On Fridays, we have 45 minute class periods, so I skipped the binary signal test part of the lesson plan. It was such a great way to end my first week of the school year. I assigned pairs and allowed learners 3 minutes to try to figure out how it worked, then we had a short discussion and they were off working, on task for the rest of the period. I circulated giddily listening to their conversations. This time I used the Activity Guide, giving a copy to each learner to fill out turn in. I think it helped them to direct their thinking.