Validity and practicality of Ecology Project Based Practicum Worksheets to Improve Science Process Skills

: The research objective was to determine the validity of the due diligence worksheet based on an ecological project to improve science process skills. To find out the practicality of ecological project-based practicum worksheets to improve science process skills. The study method developed using Research and Development (R&D) consists of several stages of research implementation, namely the first stage is preparing for the Experiment/Preliminary Design. The second stage of product creation (process), includes: assessing students' abilities in selecting and using materials, tools and techniques. Next, the third stage of product assessment (appraisal), includes: assessing the products produced by students according to the established criteria. The target research subjects were 30 FKIP UNSAM Biology Education students. Data collection techniques carried out included using tests, observation sheets, questionnaires, interviews, assessment of Practicum Worksheets, portfolios, field notes and assessment rubrics. The results of this research show that the product feasibility validation test with an average score of 88.22% is declared very valid, while the practicalization test with an average score of 84.2% is declared very valid. So it can be concluded that the Practical Worksheet product is suitable for use for Biology practical learning activities.


Introduction
Developing existing scientific knowledge among participants educate is part of the method scientific to increase science process skills (Afrizon et al., 2012).The implemented level of PPP in the learning process consists of two stages which are basic process skills (Bulent, 2015).Implemented KPS implementation process in learning that is communicated, predict, use connection related with time, communicate, classify, observe, measure and use numbers, create a conclusion, and predict, which is a useful formula for solving problems (Ozgelen, 2012).
To reach optimal science process skills for a student with a learning eye studying ecology basedproject.In overcome problem environment in do task project with use knowledge knowledge ecology.For can increase ability think creative and attitude scientific so using the project model (Susanti, 2013).Invention something information important in construct knowledge for student characteristic independent learning so using a model (Siwa et al., 2013).
So called PjBL model with this Project based learning is a model of giving task project in the involving class lecturers and students as subject activities (Wena, 2014).In the real world Where a participant educates make something design and do investigation so can said use of the PjBL model (Sababha et al., 2016).PjBL model give something characteristic task project for student so that make they more think critically and challenging in solve problem for finish task the optimally and complexly (Movahedzadeh et al., 2012).The learning process is challenging and involved participant educate part of the PjBL model that delivers questions, assignments furthermore taking decision activity investigation in a manner independent in period time certain as well as in the end will produce real and useful products (Fitri et al., 2013)  Science is not free from activity practicum (Fajarudin, 2016;Rifai et al., 2016).Practice done with objective know ability psychomotor participant students (Fatimah & Abdul, 2017;Sadjati & Pertiwi, 2013).Activity practicum is also a must be equipped with device learning that is sheet Work practicum (Budiman et al., 2017;Nyamupangedengu & Lelliott, 2012;Putra & Sumarmo, 2017).Procurement sheet Work practice can help in understand activity learning practice with good inside laboratory (Hadrianti & Ramlawati, 2017).Worksheet practice can develop ability think and concretize concept (Larasati et al., 2017).Worksheet practice invite participant educate involved direct in something activity for solve related problems with life every day and give solution from problem (Abd.Rachman et al., 2017).Worksheet Practice made _ in a manner interesting and systematic can help student For Study more active in a manner independent nor in groups (Barlenti et al., 2017).
Worksheet _ practice need direct students for more independently (Mustami, 2017).One of the learning models that can direct independence student is projectbased learning (Puspasari, 2017;Putra, 2016).Project based learning is an involving learning model student in a manner active in designing objective learning for produce product or project real (Bayu et al., 2015;Chiang & Lee, 2016;Kızkapalan & Bektaş, 2017).Use the projectbased learning model, beside independent student can create product with his work themselves (Amirudin et al., 2015;Sitaresmi et al., 2017).

Method
Improvement of KPS assessment instruments through development of project models in courses ecology as potency local area in the mangrove forest area in Propinsi Aceh.So formulated with use type method development or Research and Development (R&D), with method qualitative and quantitative (mixed method).Procedure research and development used in research adopted from Thiagarajan (4D), stages include Thiagarajan in (Imanda et al., 2017)

Design (Design)
At stage This done planning to sheet Work practicum to be arranged based on results analysis and study literature that has done.The design stage consists drafting content, format selection, and layout that resulted in the initial draft sheet Work practice ecologybased project for increase science process skills.

Development (Development)
At stage This done development against early drafts sheet Work practicum that includes development material, Worksheet Student, approach learning, and development features on the sheet Work practice until be the final draft.

Result and Discussion
This research succeeded in developing teaching materials, namely e-books based on the PjBL Model which integrates scientific literacy to train critical thinking skills in Coordination System material that is theoretically and empirically valid and practical.The ebook has sub-materials namely: Nervous System, Hormones and Sensory Organs.E-book development research obtained results which will be discussed as follows Worksheet practice with project model approach This is sheet Work practice full student tasks project.There are several stages in implementation activity study development as following.

Define (Definition)
At the define stage, do analysis need sheet Work practicum which includes; analysis Biology Education Undergraduate Curriculum, analysis material, analysis characteristics student, ecological CPMK analysis, analysis objective learning eye college.Courses ecology be one eye earning college projects and products.Based on results analysis material ecology obtained results analysis material to be project ecology of activities sheet Work practice student with the products produced in Table 1.(Imran et al., 2021;Rahmi & Sumarmin, 2021;Sabri et al., 2022;Sonjaya et al., 2022).In accordance with condition appropriate teaching materials, deep V grades very valid and feasible category used for learning.Teaching tools made with worthy will own high functionality in the teaching process (Kosasih, 2021).(Mukhlisin, 2022;Susanti et al., 2021;Wigati & Ali, 2021).Explanation validity instrument measurement in study described in Figure 1.
Based on results table on in accordance with instrument research used fulfil standard in mark validity and reliability showing authenticity from instrument measurement in measure thing to be become variable bound in research (Putri et al., 2021).That instrument measurement worthy for used in research.Book guide practice is A book to be guide student in do practical and helpful a teacher for reach something objective learning (Sari, 2018).Availability book guide IPA practicum can guide student in implementation practicum and help the teacher in reach objective practicum (Prastowo, 2011;Prabowo et al., 2016).

Conclusion
Based on results study can concluded that validity test results done for know evaluation from design product or sheet Work practicum conducted by experts.Aspect assessment on validity test consists of the five components, viz component content with a score of 90.5% is categorized as very valid , component language with a score of 77.0% is categorized as valid, component presentation of 95.6% categorized as very valid, suitability with model learning project with a score of 87.4% is categorized as very valid and LKP of students' science process skills with a score of 90.6% is categorized as very valid whereas validity practicalization measurement in study covers component content with value 87.5 very valid category , component presentation with the value of 93.8 is very valid category, the Language component with value 81.3 valid category and components graphics with value 75.0 valid category, result in the practicalization test stated that sheet Work practice can be declared valid utilized in lectures ecology in practicum.Universitas Samudra DIPA Funds for Fiscal Year 2023 There are 6 stages the use of Project Based Learning, according to The George Lucas Educational Foundation(Lucas, 2005), namely: Determination Question Fundamental (Start With the Essential Question), Designing Planning Project (Design a Plan for the Project), Develop a Schedule (Create a Schedule), Monitor Participant Educate and Progress Project (Monitor the Students and the Progress of the Project), Testing the Results (Assess the Outcome), and Evaluating Experience (Evaluate the Experience).
: Define, Design, Development and Disseminate.But on research This got to the stage third that is development.Because on research No measure level effectiveness product developed.

Table 1 .
Worksheet _ Practice Project Ecology At stage This as reference for designing design product to be developed.Activities undertaken covers selection of target media media selection for develop suitable media with problem research, the selection of the objective format so that the product will be developed own suitable concept with subject research, and realizing it in the design early.Activity which resulted in a similar draft I with research (Akhlis & Dewi, 2013) draft I was used for design a work program that will done.Work practicum done counted use percentage with average rating of 88.22 in very valid category.Height level validity created sheet Work practice Already fulfil conditions in field component content, component language, component presentation, suitability with model learning project and LKP Student science process skills.Use language and terms you are familiar with student be one excess from textbook.Completeness sheet work and sheets project as well complementary in this textbook.Appropriateness something available teaching materials worn will more If mark validity is at in category high

Table 2 .
Validation Test Appropriateness Product