NGSS

HS-LS1-4

5 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.

Biology · Chapter 4 · Lesson 1

Mostly growing, briefly dividing.

Biology · Chapter 4 · Lesson 2

Two cells, identical on purpose.

Biology · Chapter 4 · Lesson 4

A failure of control, not of speed.

Honors Biology · Chapter 4 · Lesson 1

Most cells are not in the cycle at all.

Honors Biology · Chapter 4 · Lesson 2

Two identical cells, and the machinery that guarantees it.