Answered

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Mr. Devereaux's students were in science lab trying to identify biomolecules: carbohydrates, fats and proteins. During the lab experience, Assistant Principal Haskins came in to evaluate the teacher and the learning environment. Ms. Haskins reacted positively to the fact that the students were conducting a hands-in investigation, but she reacted negatively to the overall classroom environment. Take a look at one lab group. Justify Ms. Haskins' concern. What procedures should Mr. Devereaux have followed before the lab began?

Sagot :

Your teacher will probably go over the lab procedures with you and your classmates before you lead an experiment.

You will often receive a printed guide that describes the experiment in depth in addition to verbal instructions, frequently with pictures and drawings.

It's important to pay attention as your teacher goes over the directions so you can complete the experiment correctly and securely when class starts.

What precaution should we take while experimenting in lab?

Be careful when handling chemicals, reagents, and stains, and heed all instructions. The contents and any potential hazards are listed on the labels of all bottles and containers. Avoid contact with the chemical and fumes, for instance, if the label instructs you to.

Your teacher will probably go over the lab procedures with you and your classmates before you lead an experiment.

You can keep yourself safe in the lab with the appropriate clothing and tools. Depending on the experiment, your teacher should provide you with particular directions on what to wear to each class as each one calls for the use of various tools and substances that have varying degrees of hazard.

Though they are not something you should be preoccupied by, as mentioned above, accidents in school laboratories are rather common. Your teacher should review with you what safety equipment your lab contains.

For more information regarding lab safety, visit:

https://brainly.com/question/17994387

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