Calculate

AREA

• circles
• parallelograms
• rectangles
• squares
• trapezoids
• triangles

ATOMIC MASS

• of a single atom in grams

ATOMIC RADIUS

• of a single atom in millimeters

AVERAGE (or MEAN)

• of a collection of numbers

DECIMALS FROM PERCENTS

• [Link 1]

LEAF NUMBER (the NUMBER of LEAVES on TREES)

• Using various estimation techniques: [Link 1] [Link 2] [Link 3]

MEAN (or AVERAGE)

• [Link 1]
• [Link 2]

MEDIAN

• [Link 1]
• [Link 2]

MODE

• [Link 1]
• [Link 2]

PERCENT

• [Link 1]
• Practice problems [Link 1]

PERCENTS FROM DECIMALS

RANGE

• [Link 1]

SPECIES DIVERSITY INDICES

• Biodiversity Indices online calculator
• Simpson’s Index
• Shannon’s Index (or Shannon-Wiener’s Index)

SPECIES RICHNESS INDICES

• Ephemeroptera-Plecoptera-Tricoptera (EPT)

SIGNIFICANT FIGURES

• [Link 1]

SPEED (or VELOCITY)

• [Link 1]

STANDARD DEVIATION

• [Link 1]

UNIT CONVERSIONS (metric)

• [Link 1]

UNIT CONVERSIONS (English)

VOLUME of (solid) objects

• cylinders
• cones
• sphere
• square cubes
• square-based pyramids
• rectangular cubes
• triangle-based pyramids

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