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This study determined the effectiveness of guided inquiry and open inquiry instructional strategies on secondary school students’ biology achievement in Osun State. A non-equivalent pretest posttest quasi-experimental design with Senior Secondary One classes was used, using the Biology Achievement Test (BAT). Data were analyzed with ANCOVA, showing significant advantages for open inquiry over guided inquiry and conventional methods.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/effectiveness-of-guided-inquiry-and-open-inquiry-instructional-strategies-in-improving-biology-students-achievement/591889/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/effectiveness-of-guided-inquiry-and-open-inquiry-instructional-strategies-in-improving-biology-students-achievement/591889.png","ImageObject",300,407,{"name":92,"@type":93},"Mabel","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-31","2026-10-15",true,{"@type":102,"interactionType":103,"userInteractionCount":34},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What instructional strategies were compared in the study?","Question",{"text":112,"@type":113},"The study compared guided inquiry and open inquiry strategies against a conventional teaching method for Biology.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How was student achievement measured?",{"text":117,"@type":113},"Student achievement was measured using the Biology Achievement Test (BAT), with data analyzed using analysis of covariance (ANCOVA).",{"name":119,"@type":110,"acceptedAnswer":120},"Which strategy improved Biology performance the most?",{"text":121,"@type":113},"Open inquiry improved students’ performance better than both the guided inquiry group and the conventional method group.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},591889,1792231372,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":34,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":41,"preview_page_count":4},7971474920318,"https://ap-avatar.wpscdn.com/avatar/74000ee537e6b0ca360?x-image-process=image/resize,m_fixed,w_180,h_180&k=1788430171632181674","Effectiveness of Guided Inquiry and Open Inquiry Instructionals Strategies in Improving Biology Students’ Achievement  \nAdeyinka Olayemi Owolade  \nDepartment of Science and Technology Education Obafemi Awolowo University, Ile-Ife, Nigeria, [owoladeadeyinka9@gmail.com](owoladeadeyinka9@gmail.com)  \nMarie Onovroghene Salami  \nDepartment of Science and Technology Education Obafemi Awolowo University, Ile-Ife, Nigeria, [mariesalami56@yahoo.com](mariesalami56@yahoo.com)  \nAdeyinka Oluwaseun Kareem  \nDepartment of Science and Technology Education Obafemi Awolowo University, Ile-Ife, Nigeria, [adeyinkareem@gmail.com](adeyinkareem@gmail.com)  \nPopoola Oluwasegun Oladipupo  \nDepartment of Science and Technology Education Obafemi Awolowo University, Ile-Ife, Nigeria,  \n[oluwasegunpopoola@yahoo.com](oluwasegunpopoola@yahoo.com), [segpopson@gmail.com](segpopson@gmail.com)  \nIn recent years, students' performance in Biology in the Senior Secondary Certificates Examination (SSCE) has not been encouraging. Studies have attributed fluctuating achievement of students in Biology to ineffective use of instructional strategies. If sustainable solution is not proffered to the issue of poor performance in Biology, it could hinder the fulfilment of educational goals for science, especially in the health sector. This study advocated the use of teaching strategies that will promote and encourage teachers to adopt learning strategies that will demand students to think critically and contribute effectively in class and the society at large. Therefore, this study was carried out to determined the effectiveness of guided and open inquiry instructional strategies on academic performance of secondary school students in Biology in Osun State. The non-equivalent pretest posttest quasi-experimental research design was used for the study. The population comprised all senior secondary school Biology students in Osun state. The sample consisted of Senior Secondary One (SS1) Biology students in their intact classes selected using multistage sampling procedure. Biology Achievement Test (BAT) was used to gather data for the study. Data collected were analysed using analysis of Covariance. From the study, the results showed that there was a significant difference between the experimental groups taught Biology using guided inquiry and open inquiry strategies, and the control group taught Biology using conventional method. Open inquiry strategy improve students’ performance better than the other groups. Also, guided inquiry stimulate students’ performance than conventional method. The study concluded that Open inquiry is a better teaching strategy; as it was more effective in improving the academic performance of students in Biology in the study area.  \nKeywords: science education, biology, science process skills, student’s achievement, instruction  \nINTRODUCTION  \nThere has been various discussions regarding the teaching and learning of Science overtime. This is because there has been increased emphasis on the development of individuals through innovation and development of creative ideas which is entrenched in the national policy of education (FRN, 2004) . It was stated in the National Policy of Education that the first cardinal aim for effective scientific  \nCitation: Owolade, A. O., Salami, M. O., Kareem, A. O., & Oladipupo, P. O. (2022) . Effectiveness of guided inquiry and open inquiry instructional strategies in improving biology students’ achievement. Anatolian Journal ofEducation, 7(2), 19-30. [https://doi.org/10.29333/aje.2022.723a](https://doi.org/10.29333/aje.2022.723a)  \nteaching is to bring about development of scientific inquiry, and abilities in students towards creativity (FRN, 2013) . Scientific teaching and learning is expected to promote the gaining of knowledge, skills and attitude which will culminate in societal development. The societal development is more paramount in recent times because the characteristic of the 21st century society is the ad","cbCaivMwIiSMGqNf","https://ap.wps.com/l/cbCaivMwIiSMGqNf","pdf",305567,12,"English","# Introduction\n## Background and problem statement\n## Purpose of the study\n# Methodology\n## Research design and participants\n## Instrument and data analysis\n# Results and discussion\n## Comparative effectiveness of strategies\n# Conclusion","[{\"question\":\"What instructional strategies were compared in the study?\",\"answer\":\"The study compared guided inquiry and open inquiry strategies against a conventional teaching method for Biology.\"},{\"question\":\"How was student achievement measured?\",\"answer\":\"Student achievement was measured using the Biology Achievement Test (BAT), with data analyzed using analysis of covariance (ANCOVA).\"},{\"question\":\"Which strategy improved Biology performance the most?\",\"answer\":\"Open inquiry improved students’ performance better than both the guided inquiry group and the conventional method group.\"}]","Effectiveness of Guided Inquiry and Open Inquiry Instructional Strategies in Improving Biology Students’ Achievement | PDF",1792073415]