Life Science

Grade 8 Science Curriculum

Unit of Study: LIFE
Suggested Time: 8 Weeks

 

Content Standard 8.2 Reproduction is a characteristic of living systems and it is essential for the continuation of every species.

  • Heredity is the passage of genetic information from one generation to another.
  • Some of the characteristics of an organism are inherited and some result from interactions with the environment.
Essential Question: What processes are responsible for life’s unity and diversity?

 

Focus Question #1 How do cells divide?

Expected performances (C25) The student will be able to:

a. model the process of mitosis.

b. model the process of meiosis.

c. explain the similarities and differences in cell division in somatic and germ cells.

Required Activities:

  1. Mitosis modeling activity. (Ex: “Modeling Mitosis” Activity) Refer to Prentice-Hall “Cells and Heredity” Lab Zone CD-ROM (CINQ. 5, 8, 9)
  2. Meiosis modeling activity. (Ex: “Modeling Meiosis” ) Refer to Prentice-Hall “Cells and Heredity” Lab Zone CD-ROM (CINQ. 5, 8, 9)

Optional Activities:

none

Assessments:

(State-provided performance assessment will be imbedded in this unit)

Assess performance expectations C25a and inquiry skills expectations. (Ex: “Compare and Contrast Mitosis and Meiosis”) Refer to Project CRISS Manual, p. 77 (CINQ. 7)

Focus Question #2 How do humans reproduce?

Expected performances (C26) The student will be able to:

a. describe the structure and function of the male and female human reproduction systems, including the process of egg and sperm production.

Required Activities:

  1. Graphical comparison of male and female human reproductive systems. (Ex: “What’s the Big Difference” Discover Activity) Refer to Prentice-Hall “Human Biology and Health” Lab Zone CD-ROM (CINQ. 2, 8, 10)
  2. Body proportion development lab. (Ex: “Growing Up” Skills Lab) Refer to Prentice-Hall “Human Biology and Health – All in One Resource Book”, pgs. 454-455 (CINQ. 6, 9)

Optional Activities:

none

Assessments:

Assess performance expectations C26a and inquiry skills expectations. (Ex: “The Time of Your Life” Performance Assessment) Refer to Prentice-Hall “Human Biology and Health – All In One Resource Book”, pgs. 465-466 (CINQ. 7)

Assess performance expectation C26a. (Ex: “The Endocrine System and Reproduction” Chapter Test (modified))Refer to Prentice-Hall “Human Biology and Health – All In One Resource Book”, pgs. 467-470.

 

Focus Question # 3 How are traits inherited from humans to their offspring?

Expected performances (C27) The student will be able to:

a. describe how genetic information is organized in genes on chromosomes, and explain sex determination in humans.

Required Activities:

  1. Allele sorting activity. (Ex: “Chromosomes and Inheritance” Laboratory Investigation) Refer to Prentice-Hall “Cells and Heredity” – All In One Resource Book, pgs. 209-213 (CINQ. 5, 1, 4, 7, 8, 9)
  2. Genotype vs. phenotype activity. (Ex: “All In the Family” Chapter Project Performance Task) Refer to Prentice-Hall “Cells and Heredity” – All In One Resource Book, pgs. 166-172 (CINQ. 3, 4, 7, 8, 9)
  3. Dominant vs. recessive gene lab activity. (Ex: “Take a Class Survey” Skills Lab) Refer to Prentice-Hall “Cells and Heredity” – All In One Resource Book, pgs. 180-182 (CINQ. 1, 6, 7)

Optional Activities:

  1. Genetic probability lab activity. (Ex: “Make the Right Call” Skills Lab) Refer to Prentice-Hall “Cells and Heredity” – All In One Resource Book, pgs. 190-192 (CINQ. 5, 8)

Assessment:

Assess performance expectations C27a and inquiry skills expectations. (Ex: “Dominant or Recessive” Performance Assessment) Refer to Prentice-Hall “Cells and Heredity” – All In One Resource Book, pgs. 215-216 (CINQ. 8)

Assess performance expectation C27a. (Ex: “Genetics: The Science of Heredity” Chapter Test)Refer to Prentice-Hall “Cells and Heredity” – All In One Resource Book, pgs. 217-220

Resources:

Prentice Hall Human Biology and Health

Prentice Hall Cells and Heredity

 

Bold face indicates CORE expected performances to be assessed by CMT

Ledyard Public Schools
Revised 5/20/05
Approved by Instructional Council May 20, 2005