Lesson 3: Obtaining Energy and Removing Waste
Duration of Days: 3
Lesson Objective
1. Students explore the structure and function of the digestive system and how it interacts with other systems, including the excretory system.
2.Students will explore how plants obtain energy, supporting or refuting the claim that plants and animals obtain energy in the same way.
How do organisms obtain energy and remove waste?
cell differentiation
tissue
organ
organ system
muscle
joint
ligament
hydrostatic skeleton
exoskeleton
cardiac muscle
smooth muscle
Calorie
nutrient
digestion
mechanical digestion
chemical digestion
esophagus
peristalsis
villus
excretory system
photosynthesis
vascular tissue
xylem
phloem
stoma
pharynx
trachea
bronchi
lungs
diaphragm
alveoli
atria
ventricles
artery
vein
capillary
open circulatory system
closed circulatory
system
nervous system
neuron
central nervous system
spinal cord
peripheral nervous system
sensory system
receptor
MS-LS1-3
Interpreting diagrams of systems that obtain energy (digestive) and remove waste (excretory)
Explaining cause-and-effect relationships in energy use and waste removal
Using evidence to support explanations of how organisms maintain life
Applying academic science vocabulary in context
Analyzing models to understand how structures relate to function
Students explore how living things obtain energy and remove waste to survive.
To explain how organisms use structures and processes to maintain life.
DOK 2 (Skills & Concepts)
Comparing human digestive and excretory systems to healthy eating habits and hydration
Observing how plants take in sunlight and water in schoolyards or community gardens
Relating energy use and waste removal to sports, exercise, and daily activities
Discussing how communities manage food, energy, and waste efficiently
Connecting cellular processes to personal health and nutrition
Only animals obtain energy; plants do not
Energy and waste are separate and unrelated processes
Cells or organisms don’t need to remove waste to survive
Organs or structures involved in energy use work independently
Photosynthesis is only about sunlight and doesn’t involve energy transfer
Use diagrams, models, and real-life examples of energy and waste systems
Provide sentence frames for explaining energy and waste processes
Pair students for discussion or hands-on activities
Highlight and chunk key vocabulary
Use graphic organizers to trace energy and waste pathways
Relate concepts to students’ personal experiences with food, exercise, and hydration
Formative Assessment