Day 3

• As usual, rule out the use of 0 as a first digit in today’s work.
• Write a four-digit number with 7 in the thousands place. Ask each student to read the number written by the student on the right. Ask questions of the whole group, for example: Which number is largest? Smallest? What is the largest possible correct answer? Smallest? When many students write the same number, is it because they don’t have many choices of correct answers?
• Write a five-digit number. Ask each student to read the number written by the student on the right. Ask questions, as usual.
• Write a five-digit number with 7 in the ones place. Ask each student to read the number written by the student on the right.
• Write a five-digit number that comes between 17 000 and 18 000. Ask each student to read the number written by the student on the right.
• Write a six-digit number with a 0 in it. Ask each student to read the number written by the student on the right.
• Write a six-digit number bigger than 500 000. Ask each student to read the number written by the student on the right.
• Write a six-digit number with 4 in the thousands place. Ask each student to read the number written by the student on the right.
• I will give you two digits, 6 and 4. Write all the numbers you can, using those two digits. Write the numbers in order from smallest to biggest.
• I will give you three digits, 5, 6 and 9. Write all the numbers you can, using those three digits. Write the numbers in order from smallest to biggest.
• Doubling: Start with 5. Double it, then double the answer, then double that answer. Keep going until the time is up. (Allow about two minutes.)
• Repeat, starting with 2.
• Thanks. You may sit down again.