EDSTARAnalytics Deep Dive 5

Educational adventures for curious kids

Math 1 · Unit 9 · Lesson 4 · part 5 of 5

Practice Problems

Try them, get help one step at a time, then print how it went.

Practice: give one form, write the other

Each problem gives one form and asks for the other, arithmetic and geometric mixed. Hint names the step, Show next step shows one worked step at a time, Reveal answer checks, and Hide help / start over clears the card. Find the start, find d or r, then write the other form.

My results

Finished the practice? Print a page that shows each question, what you typed or chose, the correct answer, and how it went. Good for showing a teacher or keeping in a folder.

Exit ticket

On paper or an index card. Use the math word and the plain-English word.

  1. Write Next = Now + 5, starting at 2, in formal notation.
  2. Change it to an explicit rule and simplify.
  3. Change an = 4 · 3n − 1 to a recursive rule.
  4. Which rule would you use to find the 200th term, and why?
Check your exit ticket
  1. an + 1 = an + 5, a1 = 2.
  2. an = 2 + 5(n − 1) = 5n − 3.
  3. a1 = 4, an + 1 = 3 · an.
  4. The explicit rule: one calculation instead of 199 steps.

Where to go next

All the partsRecursive and Explicit, Both Ways Tell us what you thoughtA few quick questions about this lesson. It takes a minute, and it is how the lesson gets better.