Introduction Mr Elijah Ong and Ms Izzati
Rules and expectations • Pay attention when teacher is talking • Hand in homework on time, if not demerit marks will be given. • No copying of work. If found, zero marks will be given • Be responsive and raise questions when necessary. Raise your hand when asking a question. • No doing of other subject’s work during lesson.
Finally Lesson should be fun and meaningful! You should learn something out of it!
Biological Molecules Nutrients and Water!
Previous lessons • Cells and structures • Osmosis and diffusion
Water and us? Objectives for today • State and explain the general need for food in organisms • State the general properties of water • Identify the roles of water in living organisms. • Identify the needs to conserve water Why do we need food?
What do HP and robots need in order to operate? Chemical Energy Electrical Energy
What do humans need in order to operate? (Running, chatting, playing games etc) Chemical Energy Heat/ electrical Energy
Growth Other functions of food? Other than providing energy? Regeneration By providing the necessary raw materials
What are nutrients • Nutrients are chemical substances in food that provide energy and materials needed by the body. Proteins Carbohydrates Water Fats
Functions of water Objective: Come out with a list of words which describes how water is used by humans/animals/plants and let another group guess it! Time: 5 mins Instructions: Group 1 vs Group 2 Group 3 vs Group 4 Draw on the board and guess the list of words given! Time: 5 mins Game Time! Win Lose or Draw!!
Some functions of water in plants Maintain turgidity
Going beyond • What if we found water in other planets??? Let’s watch a video on this….