BellRinger – Aug 31, 2010These are real TAKS questions…

1. Which of the following would be best to use to measure the mass of a mineral sample?a. Meterstickb. Graduated cylinderc. Balanced. Hand lens

2. A shoe company claims in an advertisement that its athletic shoes are “for winners only.” The shoe company hopes that people who read the ad will infer which of the following about the shoes?e. They are designed for people who play only one sport.f. They are more expensive than other brands of shoes.g. They are likely to improve the athletic ability of people who wear them.h. They come in colors that are different from those of other athletic shoes.

Period 1Maelin BurrSteven CardozaTony CashmanJoshue CastilloZulema CastroJustyn DeclouetteSamantha DelgadoMireya GalvanMicky GarciaAlyna GutierrezVeronica HarmonAmieya JacksonFrancisco ManzanoJennifer MartinezRicardo MartinezScott MembrenoJesus Montoya Larissa MunizJairo OlveraElsy PalestinaJustin MartinezBlanca SanchezCortney Torres

Janie AlvaradoJakeshia AndersonChristopher BandaVictor CruzAnna DeanMeagan FloresAmalia GomezDimas GomezAndrew GonzalesMichaela GonzalezDamian HernandezJimmy HernandezJoey HernandezJohn MitchellJaime MontanezJose MoralesJohn NeilsonEdgar Prado

Enedina Reyna

Froylan RoblesMiriam SahluDestiney SanchezMariah SanchezMark SordiaJanette TamezAlexius TorresLouis TrevinoMonica VelazquezMaria VillarealTrisitin WellsFredrick WhiteXavier WilliamsYaquelin Yanez

Jacqueline AguilarSheida CarugatiDaniela CompeanDikeba DavisElizabeth DeleonEmily EstradaAutumn FallsKody FordTameera FrazierAlicia GarciaChelsea Garner

Isaiah Green

Saide HernandezYulisa HernandezguevaraNathan MontesAna MoralesChristopher MoyedaJonae PerkinsKayla SellersGiovani Torres-AponteBryant Turner

Armando AcostaAaron AyalaEusebio BabineauxDeborah CarvalloNatalie CaserosOdalis ChavezJuan ContrerasAilyn FloresSteven GamaArmandeo GarciaAlexis GuzmanDasya HawkinsIsela HernandezBiance MillerLissette PerezCarlos ReyesCristobal ReyesOscar ReyesYadire RodriguezJoseph SaenzKosta Vastakis

Kevin AcostaChristopher AllenNorma AlvarengaJovoire Bush-PowellCeleste CazaresJennifer ChapaJavon ConnerAmari EllisonBrendan HollidayDavid LoredoErnest MartinezRichard MendozaBrandon MorenoKimberly PalaciosLuz PerezChristina Pina

Justine Pizania

Maria RamirezMickey RussellDJ SinerAlfred SmithSelena SusanoJared VargasErik VazquezJade VillarealKennedi Williams

Rickyrea AlvarezAnaih ContrerasCarlos CortinaErik FloresJessica FrancoBrittan GardunoMarifer HernandezAustin HollandNatalie MarquezJustin MataDania MejiaDiana MejiaIsrael MenjivarHilda MontoyaCourtni OwensAngela PantojaAnisa PiersonTammy RiosAdam SotoDaniel TorresAlexis TrevinoNico VelasquezNikolaus Walters

T – Learn more about Scientific Method A – Scientific Method worksheet due tomorrow, Wed, Sept 1. Notecards due Tues, Sept 7.L – Tech Savvy SurveyE – Bring your supplies to class ASAP!

What is a “control group”/ “constant”?

Often in an experiment there will be a control group. Control Group: a group that seems just like the group you’re really testing, but does not receive any actual changes. REMAINS CONSTANT!

For example, in the BrainPop video, the “control group” was the plant that was not watered at all.

The results from the control group are used to compare to the results you got from the group you manipulated (in other words, the group you gave the independent variable).

What is a “control group”?Sometimes when you use a control group, you might give them a placebo.

Placebo – Not the real thing! Something that you give to your control group that looks exactly like what you’re giving to your experimental group, but isn’t really changing anything.

For example, if I am testing whether a sports drink really works, I will give my “REAL” group the sports drink and I will give my “CONTROL” group regular water with food coloring in it. It will look exactly like the sports drink, but without any of the qualities that I’m testing for. That way, the group won’t be affected by thinking they’re the ones being tested.

Mr. Krabbs wants to make Bikini Bottoms a nicer place to live. He has created a new sauce that he thinks will reduce the production of body gas associated with eating crabby patties from the Krusty Krab. He recruits 100 customers with a history of gas problems. He has 50 of them (Group A) eat crabby patties with the new sauce. The other 50 (Group B) eat crabby patties with sauce that looks just like new sauce but is really just mixture of mayonnaise and food coloring. Both groups were told that they were getting the sauce that would reduce gas production. Two hours after eating the crabby patties, 30 customers in group A reported having fewer gas problems and 8 customers in group B reported having fewer gas problems.

1) Which group is the control group/constant?

2) Was there a placebo used? If so, what was it?

3) What was Mr. Krabbs’ hypothesis? 4) What is the independent variable? 5) What is the dependent variable? 6) What should Mr. Krabbs’ conclusion be? 7) Why do you think 8 people in group B reported feeling better?

Correcting Your Quiz…You have 1 opportunity to correct your quiz.

You must make your corrections on a blank sheet of loose leaf paper and staple it to your original quiz.

You should make NO changes to your original quiz. All new writing should be on the loose leaf paper.

You will number the question you got wrong and write the correct answer next to the number. For the situations on the back, you will write in complete sentences. If you do not write in complete sentences, you will not receive the points back.

Correcting Your Quiz…How many points will I get back?

If you make the correction right and follow ALL directions, you will receive HALF of the points back.

For example, if you left an answer blank or got it completely wrong, you’ll get ½ a point back (50%).

If you got a question half (1/2) right, you’ll get ¼ of the points back.

So if my grade now is a 40, I can turn that into a 70 if I make all my corrections.

Your paper should look like this….John Student H.M.SAugust 30, 2010 Science, Period 1, Ms. Arter

Lab Equipment & Safety Quiz Corrections

Multiple Choice:3. Scalpel

Situations:6. The students are rough-housing in lab when they should be paying attention and helping their lab partner. This is a

complete sentence!!!

1. FUME HOOD2. HAIR and SLEEVES

3. POINTED AWAY4. CLUTTERED/MESSY

5. WAFTING6. ROUGH-HOUSING

Turn the page over.