Mr. Mak's Grade 8 Science Website

Learning Goals: 1) What is a cell? 2) Three main ideas of the cell theory 3) Explain the difference between Eukaryotic cells and Prokaryotic cells 4) What is an organelle? 5) Explain the role of key organelles in plant and animal cells 6) Identify and label key organelles in plant and animal cells (on the images below) Timeline: All organelles and cell theory questions (posted below), plus the plant and animal cell diagrams (handed out in class) should be done by Wednesday October 5 Questions https://ed.ted.com/lessons/the-wacky-history-of-cell-theory 1. After watching the video ABOVE, list the three main ideas of the cell theory. https://www.youtube.com/watch?v=URUJD5NEXC8 Answer all questions below, using the video above. 1. Define what a cell is. 2. What are three things all cells have in common? 3. Explain what Eukaryotic cells are and where they are commonly found. 4. Explain two major differences between Eukaryotic and Prokaryotic cells.

Parts of a Microscope Today's Learning Goals: To identify, name and describe the function of all parts on a compound light microscope *Mini-test on this next class! Parts of a Microscope 1. Eyepiece/Ocular Lens – The lens into which the user looks to see the specimen. 2. Diopter Adjustment – Used to alter focus between eyepieces to 3. Arm – A supporting piece of the optical microscope mounted upon the base. 4. Nose  Piece – A rotating turret for switching between objective lenses. 5. Objective Lenses – Lenses with various magnification strengths. 6. Slide Holder – Clips to keep the slide in place. 7. Stage – The platform holding the specimen slide. 8. Coarse Focus – Brings specimen into general focus. 9. Fine Focus – Fine tunes the focus of the specimen. 10. Condenser – Focuses light from the light source onto the specimen. 11. Iris Diaphragm – An opaque iris composed of blades made to pass light through an aperture. 12. Base – The supporting block of th

                                                    Example of a specialized cell type: Human Red Blood Cells Concepts and Vocabulary: ·       Cells ·       Cell theory ·       Characteristics of living things ·       Types of microscopes – compound light, scanning electron, transmission electron ·       Names and function of parts and proper use of compound light microscopes ·       Animal vs. plant cells ·       Organelles ·       Cell membrane ·       Cell wall ·       Nucleus ·       Mitochondria ·       Cytoplasm ·       Vacuole ·       Chloroplasts ·       Ribosomes ·       Endoplasmic reticulum – smooth vs. rough ·       Golgi body ·       Lysosome ·       Specialized cells ·       Diffusion ·       Osmosis ·       Cellular respiration ·       photosynthesis ·       Unicellular vs. multicellular ·       Eukaryotes vs. prokaryotes ·       Microorganisms ·       Bacteria ·       Viruses ·       Protists ·       Diato

Grade 7/8 STEM Challenge #1 – Creating a Basketball Net using simple materials                                              The first net completed. It even rolls the ball back to you when you score! The Task : Using the  Engineering Design Process*  discussed in class,  your group will create a  durable ,  portable ,  stable ,  retractable and  aesthetically  appealing  basketball net, with a maximum height of 6 feet. *Define task/research/brainstorm-conceptualize/choose your best solution/sketch blueprints/develop your first prototype/test and make further  iterations /consider aesthetics Materials : Cardboard, paper, glue, scissors, string, paper plates, plastic cups, elastics, measuring tapes, straws, duct tape, masking tape, pipe cleaners, plastic bottles (various sizes up to 2L), velcro Success Criteria: Teamwork  – Were all group members are equally involved in planning and construction? Were all ideas are respected? Was class time used wisely? Was