Chromatography Chromatography GardenGarden

By: Jenny LoveridgeBy: Jenny Loveridge

Featuring Featuring Planting a Planting a RainbowRainbow

Learning Objective, Content Learning Objective, Content Standards, & Targeted Grade Standards, & Targeted Grade

LevelLevel

Colored inks are Colored inks are actually a mixture actually a mixture of colorsof colors

Students will learn Students will learn about mixtures and about mixtures and chromatography chromatography through through experimentationexperimentation

Good for second or Good for second or third gradersthird graders

Unit OutlineUnit Outline

Before Lesson: students record color they Before Lesson: students record color they see in real bouquets and in seed catalogs, see in real bouquets and in seed catalogs, and compile a class listand compile a class list

Students hear Students hear Planting a Rainbow Planting a Rainbow and watch and watch for flower colorsfor flower colors

Students are presented with imaginary Students are presented with imaginary dilemma in which they will solve through dilemma in which they will solve through chromatographychromatography

Conclusion: students use booklets made with Conclusion: students use booklets made with flower seed packets to record observationsflower seed packets to record observations

Prior to LessonPrior to Lesson Prepare flower Prepare flower

center with flower center with flower seed catalogs and seed catalogs and assortment of assortment of flowerflower

Have students visit Have students visit center and record center and record flower colorsflower colors

Photocopy flip cards Photocopy flip cards to give students a to give students a visual to follow as visual to follow as they go alongthey go along

Day One of LessonDay One of Lesson Get students ready to read Get students ready to read Planting a RainbowPlanting a Rainbow

through a class discussion and using their science through a class discussion and using their science chart to come up with a class list of colorschart to come up with a class list of colors

Read Read Planting a RainbowPlanting a Rainbow Ask students what colors they saw in bookAsk students what colors they saw in book Present students with imaginary dilemma:Present students with imaginary dilemma:

You work for a book company and have been assigned to You work for a book company and have been assigned to the job of illustrating a book about flower gardens. the job of illustrating a book about flower gardens. Unfortunately, you have only three pens to work with. How Unfortunately, you have only three pens to work with. How can you make beautiful and colorful illustrations with only can you make beautiful and colorful illustrations with only three pens? Tell students that they will use a process called three pens? Tell students that they will use a process called

chromatography to solve the problem.chromatography to solve the problem.

Day TwoDay Two

Have students take make science journals Have students take make science journals using flower seed packets and small pieces using flower seed packets and small pieces of paper to record observationsof paper to record observations

Remind students of the problem they need to Remind students of the problem they need to solvesolve

Let the students know that you will help them Let the students know that you will help them solve their problem, tell students that this solve their problem, tell students that this problem will be solved through problem will be solved through chromatographychromatography

Briefly explain chromatographyBriefly explain chromatography

Day Two ContinuedDay Two Continued

Show students how to perform Show students how to perform the experimentthe experiment

Have students get into groups Have students get into groups in order to do the experimentin order to do the experiment

Have students record Have students record observations for conclusionobservations for conclusion

Teacher’s RoleTeacher’s Role

To guide students through lesson To guide students through lesson by giving background information by giving background information and showing how to solve problemand showing how to solve problem

Various Teaching Various Teaching TechniquesTechniques

ModelingModelingGiving Giving

students a students a how-to how-to booklet to booklet to refer back torefer back to

Student EvaluationStudent Evaluation

ParticipationParticipation DirectionsDirections

Did they execute Did they execute experiment experiment correctly?correctly?

Science journalScience journal

Unit Theme/Integrated Unit Theme/Integrated SubjectsSubjects

FlowersFlowersCan be tied Can be tied

in with artin with artCan be tied Can be tied

in with the in with the life cycle of life cycle of a a flower/plantflower/plant

Appropriate LiteratureAppropriate Literature

Planting a Rainbow Planting a Rainbow by by Lois EhlertLois Ehlert

Science Book of ColorScience Book of Color by by Neil ArdleyNeil Ardley

Bloom’s TaxonomyBloom’s Taxonomy Knowledge demonstrated through observation Knowledge demonstrated through observation

and recording skillsand recording skills Comprehension demonstrated through Comprehension demonstrated through

understanding that colors such as red and understanding that colors such as red and green are actually a mixture of colorsgreen are actually a mixture of colors

Analysis through seeing that most colors are Analysis through seeing that most colors are not just one colornot just one color

Synthesis through relationship of Synthesis through relationship of chromatography and artchromatography and art

Evaluation through comparing different colors Evaluation through comparing different colors and the resulting effect and the resulting effect

Science ProcessScience Process SkillsSkills

Following Procedures Following Procedures ObservingObservingRecording ObservationsRecording ObservationsDrawing ConclusionsDrawing Conclusions

Data Collection and Data Collection and AnalysisAnalysis

Students will observe what Students will observe what happens when the water gets to happens when the water gets to the inkthe ink

Students will be asked to record Students will be asked to record observations in a bookletobservations in a booklet

The Nature of ScienceThe Nature of Science

Things are not always as they Things are not always as they seemseem

ExperimentExperiment

Students will use filter paper, water soluble Students will use filter paper, water soluble markers, a plastic cup and a pipe cleaner markers, a plastic cup and a pipe cleaner to use chromatography to separate colorsto use chromatography to separate colors

Students will use a wedge of rolled up filter Students will use a wedge of rolled up filter paper inserted in the middle of a circle of paper inserted in the middle of a circle of filter paper to see that water travels up the filter paper to see that water travels up the paper from a cuppaper from a cup

Students will watch teacher model Students will watch teacher model experimentexperiment

Experiment ContinuedExperiment Continued Students will get into groups and receive three Students will get into groups and receive three

markers per groupmarkers per group Students will make quarter size ring of dots on Students will make quarter size ring of dots on

filter paper center alternating all three colorsfilter paper center alternating all three colors Students will fill the bottom of the cup with waterStudents will fill the bottom of the cup with water Students will poke a whole in the center of filter Students will poke a whole in the center of filter

paper, soak pipe cleaner in water and insert in paper, soak pipe cleaner in water and insert in wholewhole

Students will watch as the water soaks up and Students will watch as the water soaks up and separates inkseparates ink

Students will discuss the solution to their Students will discuss the solution to their imaginary problem and make observations in imaginary problem and make observations in their science journalstheir science journals

Supplies Needed Per Supplies Needed Per StudentStudent

clear plastic cupclear plastic cup waterwater paper circles, 9-15 cm diameter paper circles, 9-15 cm diameter

(round filter paper or coffee filters)(round filter paper or coffee filters) piece of fluffy pipe cleaner (4 piece of fluffy pipe cleaner (4

inches in height, a little less than inches in height, a little less than the cup height)the cup height)

Supplies Needed Per Supplies Needed Per GroupGroup

Three water-Three water-soluble, fine- or soluble, fine- or medium-point medium-point felt-tipped pensfelt-tipped pens make sure each make sure each

group only gets group only gets three colorsthree colors

Supplies Needed Per ClassSupplies Needed Per Class

sharpened pencil, nail or similar sharpened pencil, nail or similar tool to poke a 2mm to 3mm hole in tool to poke a 2mm to 3mm hole in paperpaper

scissorsscissors