I'm really curious what conversations might arise in your classrooms as students formulate ideas and reasoning.
What's too LOW?
I've put a boundary and prompt to challenge students to be braver (greater) than zero.
What's too HIGH?
I've put a boundary and prompt to challenge students to be braver (lower) than 1,000,000.
There's a prompt for students to check if their estimate is within their range.
I know we (students and teachers) can do better than simply saying "I guessed."
I'm suggesting a sentence starter for your students, having them type, "I noticed" first and follow it with their reasoning.
I'm open for feedback on these constraints/prompts. Please let me know what you think.