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Home > Exploring the Differences in Chemistry Achievements of Secondary School Students Across School System and Gender in Quetta, Pakistan

Exploring the Differences in Chemistry Achievements of Secondary School Students Across School System and Gender in Quetta, Pakistan

Thesis Info

Author

Muhammad Alamgeer

Department

Professional Development Centre, Karachi

Program

MEd

Institute

Aga Khan University

Institute Type

Private

City

Karachi

Province

Sindh

Country

Pakistan

Thesis Completing Year

2013

Thesis Completion Status

Completed

Subject

Education

Language

English

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676727921214

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This study aimed to explore academic achievements of secondary school students in Chemistry across schools systems and gender. A newly developed and validated instrument - Chemistry Achievement Test (CAT)-was used for collection of the data. CAT comprised 35 items (25 multiple response questions and 10 constructed response questions). CAT encompassed four content domains of Chemistry; fundamental chemistry, physical state and particulate structure of matter, periodic table and periodicity of elements, and acids, bases & solutions, extracted from National curriculum for secondary classes. Furthermore, items were categorized on three cognitive domains; knowledge, application, and reasoning. CAT was administered to 374 grade 10 students who were randomly selected from public (n=6) and private (n=6) schools of Quetta, Pakistan. A total of 190 (50.8%) boys and 184 (49.2%) girls participated in the research study.Results demonstrated that the students scored only 30% of the total score exhibiting a weak conceptual understanding in the selected concepts of chemistry. Comparison across school systems favored private school students (p<0.01). Of the four content domains students from private schools have performed significantly better than students from public schools in physical state and particulate structure of matter (p<0.001). Of the three cognitive domains students from private schools performed significantly better than students from public schools in reasoning (p<0.01).Furthermore, gender comparison depicted that girls outperformed their boys counterparts (p<0.001). Of the four content domains girls performed significantly better (p<0.001 for all three) than boys in three content domains except periodic table and periodicity of elements. Of the three cognitive domains the girls performed significantly better than the boys (p<0.001 for all three).Using CAT students' conceptual understanding can be explored as well as their corresponding teachers which might lead to enable researchers to find out the impact of teachers' conceptual understanding in students achievement in Chemistry.The study also generates opportunities for further research in the area of students’ learning outcomes in secondary schools.
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گالی گلوچ( زبان کا غلط استعمال)

زبان کا غلط استعمال
اللہ تعالیٰ خالق ہے اور بقیہ تمام کائنات مخلوق ہے، کوئی فلکی مخلوق ہے، کوئی ارضی مخلوق ہے، کوئی فضائی مخلوق ہے ،مخلوق کا دائرہ کار وسیع ہے لیکن ان جملہ مخلوقات میں اشرف المخلوقات کا تاج اللہ تعالیٰ نے انسان کے سر پر سجایا ہے۔ انسان کو عظمت و رفعت بخشی، انسان کو بلندیوں کی معراج پر پہنچایا۔ اس کا سبب گوشت پوست نہیں تھا، اس کی وجوہات نفاست ولطافت نہیں تھیں۔ یہ اعزاز لحیم اور شحیم ہونے کی بناء پر ودیعت نہیں کیا گیا تھا۔ اس اعزاز کا سبب زبان بنی جواس کو دیگر مخلوقات سے متاثر کرتی ہے۔
انسان زبان سے تلاوت کرتا ہے، زبان سے نعت پڑھتا ہے، زبان سے راہ و ہدایت کی ترجمانی کرتا ہے۔ زبان سے کلمہ پڑھتا ہے، زبان سے اسلام کی تبلیغ کرتا ہے، زبان سے صداقت و دیانت کا اظہار کرتا ہے، انسان کی یہ صفات اسے حقیقت شناس انسان بنا دیتی ہیں، انسان کو معاشرے کے لیے انعام بنا دیتا ہے، اس کی عظمت کو چار چاند لگا دیتی ہے، یہاں تک کہ انسان کوفرشتوں سے بھی عظیم بنادیتی ہے۔ بقول حالیؔ:
فرشتے سے بہتر ہے انسان بننا
مگر اس میں پڑتی ہے محنت زیادہ
اللہ تعالیٰ نے قرآن پاک ِمیں ارشاد فرمایا کہ ’’لوگوں سے اچھے طریقے سے گفتگو کرو‘‘ قرآنِ پاک میں جس طرح نماز کے بارے میں حکم ہے، جس طرح زکوٰۃ کے بارے میں ارشادِ باری تعالیٰ ہے، جس طرح روزوں کے بارے میں حکمِ ربّانی ہے، بالکل اسی طرح زبان کے استعمال کا بھی ذکر ہے، نماز، روزہ، حج، زکوٰۃ اور دیگر عبادات کی بجا آوری سے جس طرح انسان کی زندگی میں نکھار آتا ہے اسی طرح زبان کے صحیح استعمال سے بھی اس کے جملہ لمحات ِزیست مرصعّ ومزیّن ہوجاتے ہیں، اور وہ اپنی زندگی...

فتوی کا اسلامی منہج: مجموع فتاوی ابن تیمیہ کے تناظر میں

Im฀m Ibn Taymiyyah is a well-known scholar of Muslims. He was an ocean of knowledge and wisdom. His books prove his excellence He was born in 661 Hijrah in Harr฀n (Syria). He learned every kind of knowledge especially religious knowledge i. E knowledge of Qur’฀n, Tafs฀r, Had฀th, Fiqh, Jurisprudence, philosophy, inheritance law, mathematics, grammar, literature, and poetry etc. He wrote hundreds of books about the above mentioned fields. He was permitted to give Fatw฀ (verdict) in his early age. He was successful in achieving the position of Ijtih฀d (authoritative interpretation of Islamic Law). Ibn Taymiyyah Studied the Profound Books of religions and sects. Then he analyzed the works in the light of senior Imams and Qur฀n and Sunnah. He is an extra ordinary person in his knowledge and writings. In brief we can say the fatw฀s of Imam Ibn Taymiyyah have printed in thirty seven volumes. His first ratiocination in Fatwa is from the Holy Qur฀n. He presents the arguments from the Hadith and Sunnah of the Holy Prophet (S. A. W). He considered Ijm฀ ‘ (consensus of Muslim opinion) as a proof of Shar฀‘ah. He presents the point of view of various schools of thought, He trusted in the books of ancient scholars. He also answers the anticipating ambiguity and complication. A few of his fatwas begin with all praise to Allah. His fatw฀s are concordant with the life of the Muslims. In this article a deep study of fatwa of Ibn Taymiyyah has been taken as a guideline for fatwa in Islamic methodology.

Bioactive Principals from Teucrium Royleanum Wall. Ex Benth. and Perovskia Atriplicifolia Benth. - Antimicrobial, Allelopathy and Antioxidant Assays

This dissertation describes the essential oil analysis, antioxidant, antimicrobial and allelopathy of two plants belonging to the genus Teucrium and Perovskia namely, Teucrium royleanum Wall. ex Benth., and Perovskia atriplicifolia Benth. belonging to the family Lamiaceae. The Teucrium royleanum was also subjected to the isolation and characterization of the secondary metabolites. Investigation of T. royleanum resulted in isolation of three (3) new compounds, the skeletons of two belonging to terpenes, named as royleanumin 1, and royleanumioside 2, while the third was named as royleanumoate 3. The compounds 1 and 2 were subjected to allelopathy assays against lettuce seedlings (weed). Compound 1 exhibited remarkable phytotoxic activities and could prove as a lead compound for the development of environmentally friendly weedicides. The known compounds isolated from this plant included, 5-hydroxy-4,7-dimethoxy flavone 4, 5,7-dihydroxy-3,4-dimethoxyflavone 5,4′, 6-dihydroxy 5,7-dimethoxyflavone 6,3,4-dihydroxymethylbenzoate 7, oleanolic acid 8, β-sitosterol 9 and β-sitosterol glucoside 10. The literature survey reveals that flavonoids are good allelochemicals and thus the characterized 5-hydroxy-4,7-dimethoxyflavone 4, 5,7-dihydroxy-3,4-dimethoxyflavone 5, 4′,6-dihydroxy 5,7-dimethoxyflavone 6 were subjected to the allelopathy assays. All compounds exhibited strong allelopathy activities to the test lettuce seedlings. Consequently, these compounds can also be used as lead structures for studies on the development of new synthetic herbicides. iiAnalysis of the essential oil obtained from Teucrium royleanum Wall. ex Benth. by means of GC-MS resulted in qualitative and quantitative identification of forty six known compounds comprising of sesquiterpene hydrocarbons (42.2 %), oxygenated sesquiterpenes (21 %), monoterpene hydrocarbons (17.3 %), oxygenated monoterpenes (7.7 %). The antioxidant capacity of the essential oil was evaluated by means of 1, 1-Diphenyl-2-Picryl-Hydrazyl (DPPH) and superoxide anion methods. The same essential oil was also subjected to allelopathy assays and showed promising results. Teucrium royleanum was tested by four variant assays in a separate set of experiments using lettuce seeds, showing excellent inhibition of the growth of lettuce seedlings. The plants leaf leachates were assayed by Sandwich and Homogenated Sandwich methods while Dish Pack Method was used for the evaluation of essential oils. The above stated methods confirmed the presence of allelochemicals in T. royleanum and were further evaluated in bioassay guided way by total activity approach. The crude methanolic extract fractionated with n-hexane, chloroform, ethylacetate, butanol and water fractions were assayed by the Total Activity Method. The essential oils, n-hexane and chloroform fractions played a significant role in our findings. The results from this study suggested that the secondary metabolites from Teucrium royleanum can be potential candidates for the phytotoxicity (Allelopathy). Analysis of the essential oil obtained from Perovskia atriplicifolia Benth. by means of GC-MS resulted in the qualitative and quantitative identification of eighteen compounds. The major constituents were camphor (28.91%), limonene (16.72%), ά-globulol (10.21%), trans-caryophyllene (9.30%), and ά-humulene (9.25%). Antimicrobial activity of the oil was evaluated using Agar Diffusion Method and Agar Dilution Method. The antimicrobial test results showed that the oil possesses significant antimicrobial activity iiiagainst ten bacteria. The bacterial strains tested were Bacillus cereus, Bacillus cerus subsp. mycoides, Bacillus subtilis, Micrococcus luteus, Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus faecium, Escherichia coli, Enterobacter aerogenes, Pseudomonas aeruginosa, Klebsiella pneumoniae (clinical isolate), and Yersinia enterocolitica respectively and five fungal strains namely Candida albicans, Aspergillus niger, Aspergillus flavus, Aspergillus fumigatus, Aspergillus parasiticus, and Geotricum candidum (wild type). The over all results of our studies on the essential oil of P. atriplacifolia suggests it to be a good source of antimutagenic and antimicrobial agents and thus can prove as a good candidate for utilization in the cosmetics, food and pharmaceutical industries.