Scientific Drawings

What makes a Scientific Drawing? What were some of the differences we noticed between the “Scientific Drawings” and the non-scientific drawings?

RULES FOR SCIENTIFIC DRAWINGS DRAW LARGE AND IN PENCIL!! DRAW ONLY WHAT YOU SEE (this is a scientific observation) USE DISCTINCT, SINGLE LINES WHEN DRAWING (Do not sketch)

RULES FOR SCIENTIFIC DRAWINGS 4. TO ILLUSTRATE DARK AREAS ON A SPECIMEN, USE DOTS (DO NOT SHADE OR CROSS HATCH)

RULES FOR SCIENTIFIC DRAWING 6. All DRAWINGS MUST INCLUDE THE FOLLOWING: A TITLE – Clear and concise. Top, centre and underlined LABELS – Label all parts of specimen you know with STRAIGHT LINES listing parts on the right hand side of the page MAGNIFICATON – The magnification of your drawing compare to the actual size of the specimen

CALCULATING MAGNIFICATION OF DRAWING SIZE OF DRAWING (μm) / Actual Size (μm)

EXAMPLE Say I drew a 100mm (10cm) version of the previous “specimen” I observed Actual size of specimen = 500μm Magnification of Drawing = 100mm/500μm What is the problem with the above equation^

EXAMPLE Magnification = 100mm (1000)/ 500μm = 100 000μm / 500μm We must convert mm to μm. Multiply by 1000 (103 ) (Conversion of larger mm into smaller μm) Magnification = 100mm (1000)/ 500μm = 100 000μm / 500μm = 200x

BEFORE WE GO INTO DRAWING ORGANISMS Make a scientific illustration of an object in the room Make sure the drawing contains: Title Labels Magnification Correct formatting (pencil, large, dots, etc.) When you have finished the drawing you may begin to look at specimens under the microscope.

BRINGING IT ALL TOGETHER Grab a specimen slide from the front of the room. Locate the specimen, and make a scientific illustration on what you see.

SCIENTIFIC ILLUSTRATION DRAWING MUST INCLUDE: Title (2 marks – One for title, one for proper formatting) Labels (1 mark - Label the cytoplasm according to the SD rules) Magnification (2 marks) Correct formatting ( 1 mark – pencil, large, dots for dark regions)

TUESDAY Quiz on Microscopy, Scientific Drawings and Taxonomy Continuing on with our Virus unit (Viral Reproduction) UTILIZE THE LONG WEEKEND TO GET SOME WORK DONE ON VIRUS RESEARCH PROJECT!!!!!