Count in base four. Start with 1 unit, and continue adding units, one at a time. Say the number aloud and write the number in base four each time. Regroup whenever necessary. Stop when you reach a flat.

b) Your numbers show which boxes are needed for 1 to 16 chocolate candies. Place the numbers in order in the table below. Note: start at the top left-hand corner of the table below and work your way across. Then continue on the left-hand side of the next row.

c) Describe patterns in the table. Why do these patterns occur?

d) Why isn't the last entry in the table, 40B4? Explain this first to your partner then record your response here.