#SYPHONER CHOSEN HOW TO#

May involve the use of a scale such as in the example below.

Uses standard metric units (For instance, meters and centimeters for length, grams for mass, and degrees Celsius for volume.

Involves tools such as rulers, timers, graduated cylinders, etc.

Uses numbers to describe the amount of something.

There are two types of data that may be collected-quantitative data and qualitative data.

Making a rough sketch or recording notes of the investigation set up is helpful if the experiment is to be repeated in the future.Ĭarrying out the investigation involves data collection. Tie back loose hair so that it does not get caught on any of the equipment. Wear protective clothing such as goggles and gloves.For example, some chemicals should not be mixed together or put down a sink drain.

#SYPHONER CHOSEN HOW TO#

Determine how to dispose of materials.Locate the nearest sink or fire extinguisher as a safety precaution.The use of construction tools or potentially harmful chemicals will require adult supervision.The LocationĬhoose a low traffic area to reduce the risk of someone accidentally tampering with the investigation results-especially if the investigation lasts for several weeks.Īvoid harmful accidents by using safe practices. When setting up the investigation, consider. Are there any steps missing? Double check the materials list to be sure all to the necessary materials are included.Īfter designing the experiment and gathering the materials, it is time to set up and to carry out the investigation. Ask someone else to read the procedure to make sure the steps are clear. Will the data be gathered in one sitting or over the course of several weeks?Ĭheck the work. List the steps needed to carry out the investigation.Įstimate the time it will take to complete the investigation. Make a list of materials that will be used in the investigation. Stain fading over time for combinations of detergents and stains Type of cloth, physical process of stain removal The dependent variable is the variable that changes as a result of /or in response to the independent variable.Ĭlarify the variables involved in the investigation by developing a table such as the one below.

Controlled variables are variables that are kept the same each time.The independent variable is the one variable the investigator chooses to change.There are three types of variables to consider when designing the investigation procedure. A well-designed investigation contains procedures that take into account all of the factors that could impact the results of the investigation. Once a hypothesis has been formulated, it is time to design a procedure to test it.

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