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Please add to Table of Contents – Observations notes (page 4). Observation. Observation. Information gathered using one or more of your senses Information gathered from observations is called evidence or data. Let’s see how good our observation skills are….

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slide2

Observation

  • Information gathered using one or more of your senses
  • Information gathered from observations is called evidence or data
let s see how good our observation skills are
Let’s see how good our observation skills are…
  • http://www.youtube.com/watch?v=xAFfYLR_IRY
pendulum lab
Pendulum Lab

Purpose – Practice making observations. We will also use this to explore variables, hypotheses, data tables and graphs.

pendulum lab1
Pendulum Lab

Instructions –

  • Get into groups of 3. Pick 1 Supply Boss.
  • You will need a ruler, a couple of books, a piece of string, and a washer. You will also need a whiteboard and marker. You can use a stopwatch if you wish.
  • Tie one end of the string to the washer and the other end to the ruler. Set the ruler on the edge of the table with the washer hanging down. Set some books down to hold it in place.
  • Pull the washer up (keeping the string straight) and let go so that it swings.
  • Play around with it (you can add more washers, change length of string, etc). Write down observations on whiteboard (try to get at least 15 observations)
pendulum
Pendulum

Once the pendulum starts to move, there are names for the aspects

of its movement. The size of a swing is called the amplitude. The amplitude

is measured in degrees--the same degrees that you use to measure angles

in geometry. One complete swing back and forth is called a cycle. The time

it takes for a pendulum to complete one cycle (a complete swing) is called its

period (meaning the period of time it takes). And just to confuse

you, the number of cycles (swings) per second (or per minute) is

called the frequency.

pendulum lab2
Pendulum Lab

Safety – Follow rules listed in Safety Agreement. No horseplay (don’t swing these around). Whiteboards are large, so please be careful with them.

pendulum lab3
Pendulum Lab

Questions???

Who is the supply boss for each group?

What are you writing down?

What are some things that you can “change”?

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Qualitative

Observation

Quantitative

  • Information gathered using one or more of your senses
  • Information gathered through observation is called evidence or data
slide15

Put a STAR by all of your QUALITATIVE observations.

  • Put a CHECK MARK by those that are QUANTITATIVE.
slide16

Qualitative

Quantitative

On back of your notes write down your observations from the pendulum activity in the correct columns

slide17

Qualitative

Observation

Quantitative

  • Quantity
  • These are descriptions/data that do use numbers
  • Anything that you can count or measure (size, temperature, speed, etc.)
  • Quality
  • These are descriptions/data that do NOT use numbers
  • Ex: colors, smells, tastes, sounds, textures
  • Information gathered using one or more of your senses
  • Information gathered through observation is called evidence or data

Summary: