HS-LS1-2

SCUSD NGSS Curriculum Guide ==== **HS-LS1-2: Develop and use a model to illustrate the hierarchical organization of interacting systems that provide specific functions within multicellular organisms.** [Clarification Statement: Emphasis is on functions at the organism system level such as nutrient uptake, water delivery, and organism movement in response to neural stimuli. An example of an interacting system could be an artery depending on the proper function of elastic tissue and smooth muscle to regulate and deliver the proper amount of blood within the circulatory system.] [//Assessment Boundary: Assessment does not include interactions and functions at the molecular or chemical reaction level//.] ====

Science Background for the Teacher:
muscle types in body systems: smooth muscle. cardiac muscle, fast twitch, skeletal muscle [overview of relevant science background for teacher]

Key Vocabulary:

 * [key vocab term for this performance expectation] || [key vocab term for this performance expectation] || [key vocab term for this performance expectation] || [key vocab term for this performance expectation] ||
 * nerve || skeletal muscle ||  ||   ||
 * cardiac muscle || smooth muscle ||  ||   ||

Possible Assessments (formative and/or summative):
[Description of assessment task]

Key Student Activity:
models of nervous (peripheral and central nervous system yarn models) cut yarn and explain what happens to a hot plate response (no sense of pain) knee hammers reflex systems, hot plates we do not understand hierarchical organization of interacting systems

Key Teacher Demo/Activity:
[Description of teacher demo or activity. Include necessary materials, if known.]

Common Student Misconceptions:
[Descriptions of common student mistakes or misconceptions related to this topic.]

Things to Avoid/Correct:
[Descriptions of imprecise language or other mistakes related to this topic that might have to be corrected at a higher grade band.]

====Other Resources (text, video, simulations, activities, models, etc..): ====

[Descriptions or links to other resources that would support student understanding of this topic or mastery of this performance expectation.]