lab tools & equipment.docx

7/28/2019 Lab Tools & Equipment.docx

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COMPETENCY: Identify the common laboratory tools and their uses

I. ENGAGEA. Review

When scientists want to answer a question, they would have to follow different

steps. What are the steps of a research method?

B. MotivationConduct a game in solving jigsaw puzzles of at least three laboratory tools.

C. Pre Laboratory activities1. Preparation of materials2. Setting standards3. Discussion of precautionary measures4. Unlocking of difficulties

II. EXPLOREA. Activity Proper

Let the pupil utilize the activity work sheet entitled, What MakesExperimentation Cool?

Work in a team of four (4) Observe and facilitate closely how the pupils do the activity cooperatively The pupils must be able to fill up the tabular data and answer the guided

questions

III. EXPLAINA. Post Laboratory Activities

1. Reporting2. Discussion, analysis and interpretation of data

Guided Question: What are the common laboratory tools and their uses?

B. GeneralizationIn performing experiments, what laboratory tools can be used? Explain how each

tool is used.

Possible Answer

a. Containers of liquids or chemical solutions which may also be used in heating1. Beaker2. Erlenmeyer Flask3. Florence Flask


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4. Test tubeb. Heating

1. Bunsen Burner2. Alcohol Lamp3.

Wire Gauze

c. Support for Set- ups1. Iron Stand with Iron Ring and Clamp2. Tripod

d. Filtration and transfer of liquids1. Funnel2. Stirring or Glass Rod3. Thistle Tube

e. Measurement1. Platform Balance2. Laboratory Thermometer3. Graduated Cylinder4. Spring Balance

f. Others1. Evaporating Dish2. Mortar and Pestle3. Test Tube Holder4. Test tube Brush5. Test Tube Rack6. Magnifying Lens7. Tuning fork8. Magnet

IV. EXTENDApplication

Fill in the blanks with the correct answer.

To heat a small amount of liquid fill the _____________ with water and hold it

with a ______________. Heat the liquid by testing the test tube at a 45 degrees

angle and passing it back and forth over the flame of an alcohol lamp.

V. EvaluateMatch column A with column B. Write only the letter of your answer on the blank.


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A B

_____1 . used for heating and burning

_____2. Holds test tube while being

heated

_____3. Measures the mass of heavy

objects

_____4. Measures temperature

_____5. Holds test tube in an upright

position

--------6. Measures volume of liquids

--------7. Allows solutions to evaporate

--------8. Grinds solid chemicals to

powder

--------9. Used for mixing solutions--------10. Allows transfer of liquids

without spilling

a. Bunsen burnerb. Laboratory thermometerc. Mortar and pestled. Glass rode. Wire gauzef. Test tube holderg. Funnelh. Platform balancei. Graduated cylinderj. Evaporating dishk. Test tube rack

VI. ENRICHMENT ACTIVITYIf you were to go on a field work to study a pond community, what laboratory

materials will you bring? Why?


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ACTIVITY WORKSHEET

What Makes Experimentation Cool?

OBJECTIVE: Identify the common laboratory tools and their uses

I. OBSERVATIONStudy the picture. Tell something about the situation.

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

_____________________

II. QUESTIONS:( Try to make relevant questions based from your observations )
http://upload.wikimedia.org/wikipedia/commons/1/10/Marshall_Nirenberg_performing_experiment.jpg


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1. ________________________________________________________________________

2. ________________________________________________________________________

III.

HYPOTHESIS

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

__________________

IV. EXPERIMENTA. Materials

Pictures of laboratory tools, manila paper, pentel pen

B. Procedure1. Post pictures of common laboratory tools with label2. Let the pupils group the tools according to their uses

C. ResultsC.1 Tabular Data

Containers of

liquids or

chemical

solutions

For heating Support for set-

ups

Filtration and

transfer of

liquids

Measurement


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C.2 Guide Questions

1. What are the common laboratory tools?

2. What are the apparatuses used in containing liquids or chemicals? For

heating?For support for set- ups?For filtration and transfer of liquids?For measurement?

3. Is using laboratory apparatuses in experimentation important? Why?

V. CONCLUSIONThe common laboratory tools are ______________________________________.

VI. APPLICATIONFill in the blanks with the correct answer.

To heat a small amount of liquid fill the _____________ with water and hold it with

a ______________. Heat the liquid by testing the test tube at a 45 degrees angle and

passing it back and forth over the flame of an alcohol lamp.

VII. TEST YOURSELF.

Match column A with column B. Write only the letter of your answer on the blank.

A B

_____1 . used for heating and burning

_____2. Holds test tube while being

heated

_____3. Measures the mass of heavy

objects

_____4. Measures temperature

_____5. Holds test tube in an upright

position

--------6. Measures volume of liquids

--------7. Allows solutions to evaporate

--------8. Grinds solid chemicals to

a. Bunsen burnerb. Laboratory thermometerc. Mortar and pestled. Glass rode. Wire gauzef. Test tube holderg. Funnelh. Platform balancei. Graduated cylinderj. Evaporating dishk. Test tube rack


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powder

--------9. Used for mixing solutions

--------10. Allows transfer of liquids

without spilling

VIII. INVESTIGATE MORE

If you were to go on a field work to study a pond community,

what laboratory materials will you bring? Why?


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COMPETENCY: Identify the parts of a microscope.

I. ENGAGE

A. Review

Show the different laboratory equipment. The pupils will name them and tell how they are

used.

B. Motivation

Show a microscope to the pupils. The pupils will tell something about it.

Ask the pupils if they can tell the parts of the microscope.

C. Pre-Laboratory Activities

1. Preparation of Materials

2. Setting Standards

3. Discussion of Precautionary Measures

4. Unlocking of Difficulties adjustment, diaphragm and inclination joint.
http://www.google.com.ph/imgres?imgurl=http://mangetreatments.net/wp-content/uploads/2011/01/Microscope.jpg&imgrefurl=http://wheretobuymicroscope.info/parts-of-microscope/a-picture-of-a-microscope/&h=360&w=360&sz=26&tbnid=wip_AJMd_UvSfM:&tbnh=90&tbnw=90&prev=/search?q=Picture+of+a+microscope&tbm=isch&tbo=u&zoom=1&q=Picture+of+a+microscope&docid=Iduw5GTwq5BfXM&hl=tl&sa=X&ei=6-WwT9CuFqHKmAX5r7DDCQ&ved=0CIsBEPUBMAI&dur=4250http://www.google.com.ph/imgres?imgurl=http://mangetreatments.net/wp-content/uploads/2011/01/Microscope.jpg&imgrefurl=http://wheretobuymicroscope.info/parts-of-microscope/a-picture-of-a-microscope/&h=360&w=360&sz=26&tbnid=wip_AJMd_UvSfM:&tbnh=90&tbnw=90&prev=/search?q=Picture+of+a+microscope&tbm=isch&tbo=u&zoom=1&q=Picture+of+a+microscope&docid=Iduw5GTwq5BfXM&hl=tl&sa=X&ei=6-WwT9CuFqHKmAX5r7DDCQ&ved=0CIsBEPUBMAI&dur=4250http://www.google.com.ph/imgres?imgurl=http://mangetreatments.net/wp-content/uploads/2011/01/Microscope.jpg&imgrefurl=http://wheretobuymicroscope.info/parts-of-microscope/a-picture-of-a-microscope/&h=360&w=360&sz=26&tbnid=wip_AJMd_UvSfM:&tbnh=90&tbnw=90&prev=/search?q=Picture+of+a+microscope&tbm=isch&tbo=u&zoom=1&q=Picture+of+a+microscope&docid=Iduw5GTwq5BfXM&hl=tl&sa=X&ei=6-WwT9CuFqHKmAX5r7DDCQ&ved=0CIsBEPUBMAI&dur=4250


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II. EXPLORE

A. Activity Proper

Let the pupils utilize the activity worksheet about the parts of the microscope. This activity must be performed in the room or in the school laboratory. Work in a team of five (5). Observe and facilitate closely how the pupils do the experiment cooperatively. The pupils must be able to identify the parts of the microscope correctly.

III. EXPLAIN

A. Post Laboratory Activities:

1. Reporting

2. Discussion, Analysis and Interpretation of Data:

Guide Question:

What is an optical instrument that magnifies the size of a very tiny specimen so that it could

be seen clearly by the naked eye.

B. Generalization:

Can you identify the parts of a microscope?

(Possible Answer: Yes, the parts of the microscope are: eye piece, body tube, revolving

nosepiece, dust shield, arm, coarse adjustment knob, fine adjustment knob, stage, stage clip,

pillar, inclination joint, base, condenser, Iris diaphragm, mirror)

IV. EXTEND

A. Application

You want to know the parts of the blood. What instrument will you use to know the

parts of the blood? Why? Give the parts of the microscope.

V. EVALUATE

Identify the parts of a microscope

1. Platform where the slide with specimen to be examined is placed.

2. A short curved handle used in carrying the microscope.

3. Used to hold the slide with the specimen in place while being examined.

4. Also known as the foot of the microscope where the microscope stands.

5. Found in the draw or eye tube and is used to further magnify the specimen being focused.

VI. ENRICHMENT ACTIVITIESAnswer the following questions:

1. Why is it necessary to cover the specimen being mounted on a slide with a cover glass

before

examining it under a microscope?

2. Why is it necessary to focus with the fine adjustment knob in high magnification at all

times?


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OBJECTIVE: Identify the parts of a microscope.

I. OBSERVATION:

Study the illustration below. Write something about the microscope.

_____________________________________________________________________________________

_

_____________________________________________________________________________________

___

_____________________________________________________________________________________

___

_____________________________________________________________________________________

___

II. QUESTIONS

( Try to make relevant questions based from your observations)

1.

____________________________________________________________________________________

2.

____________________________________________________________________________________

III. HYPOTHESIS

_________________________________________________________________________________

_____________________________________________________________________________________

_
http://www.google.com.ph/imgres?imgurl=http://mangetreatments.net/wp-content/uploads/2011/01/Microscope.jpg&imgrefurl=http://wheretobuymicroscope.info/parts-of-microscope/a-picture-of-a-microscope/&h=360&w=360&sz=26&tbnid=wip_AJMd_UvSfM:&tbnh=90&tbnw=90&prev=/search?q=Picture+of+a+microscope&tbm=isch&tbo=u&zoom=1&q=Picture+of+a+microscope&docid=Iduw5GTwq5BfXM&hl=tl&sa=X&ei=6-WwT9CuFqHKmAX5r7DDCQ&ved=0CIsBEPUBMAI&dur=4250


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_____________________________________________________________________________________

IV. EXPERIMENT

( This activity must be performed in the room or in your school laboratory)

A. Materials:

Microscope, chalk, ballpen and paper, manila paper, books, chart

B. Procedure:

1. Using your Science Headway 6 book page 15. Study the parts of the microscope.

2. Look at the real microscope on the table.

3. Write the names of the parts of a microscope on strips of cartolina.

4. Label the parts of a real microscope using those strips of cartolina.

5. Tell something about each part.

C. Results:

C.1. Picture of a microscope

C.2 Guide Questions:

1. Label the parts of a microscope correctly.

2. Write something about each part.

V. CONCLUSION

The parts of the microscope are

_______________________________________________________

___________________________________________________________________________________

___________________________________________________________________________________

___________________________________________________________________________________

VI. APPLICATION
http://www.google.com.ph/imgres?imgurl=http://mangetreatments.net/wp-content/uploads/2011/01/Microscope.jpg&imgrefurl=http://wheretobuymicroscope.info/parts-of-microscope/a-picture-of-a-microscope/&h=360&w=360&sz=26&tbnid=wip_AJMd_UvSfM:&tbnh=90&tbnw=90&prev=/search?q=Picture+of+a+microscope&tbm=isch&tbo=u&zoom=1&q=Picture+of+a+microscope&docid=Iduw5GTwq5BfXM&hl=tl&sa=X&ei=6-WwT9CuFqHKmAX5r7DDCQ&ved=0CIsBEPUBMAI&dur=4250


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Answer:

You want to see clearly by your naked eye a very tiny specimen in your science experiment, what

equipment will you use? Why? Tell the parts of the microscope.

VII. TEST YOURSELF

Identify the following parts of a microscope.

_____________ 1. It is found in the draw or eye tube and is used to further magnify the specimen being

focused.

_____________2. It serves to further concentrate light rays on the specimen.

_____________3. One which is found above the mirror and which regulates the amount of light

reaching

the specimen.

_____________4. It is the glass located below the stage with both concave and flat surfaces to gather,

reflectand direct the light to illuminate the specimen.

_____________5. It is also known as the foot of the microscope where the microscope stands.

_____________6. It is the part located between the arm and the pillar which facilitates the tilting of

the microscope.

_____________7. It is short support which arises from the base.

_____________8. It is used to hold the slide with the specimen in place while being examined.

_____________9. It is a mechanism attached to the stage for ease in moving the slide.

____________10. It is a platform where the slide with specimen to be examined is placed.

VIII. INVESTIGATE MORE

Read about some outstanding scientist who made great contributions to the microscopes

perfection. Make a list of the names of these scientists.

lab tools & equipment.docx

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