The effect of using worksheet on students’ number sense ability

Wulandari, Nourma Pramestie; Safitri, Anis; Novitasari, Dwi; Salsabila, Nilza Humaira; Suliani, Mega

doi:10.1088/1742-6596/1776/1/012023

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…The visual aspect has an essential role in the development of a book. An attractive book's physical appearance factor (interface) can make students curious to find out how detailed the book's contents are (Wulandari et al, 2021). More than that, students feel energized by a varied display.…”

Section: Discussionmentioning

confidence: 99%

The development of numeracy problems for junior high school students

Wulandari

Kurniati

Wahidaturrahmi

2023

jel

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Numeracy has become part of the Minimum Competency Assessment (MCA) used in the National Assessment (NA) since it was established in 2021. However, previous research shows that the numeracy skills of junior high school students are still in the low category. The purpose of this study was to obtain a prototype of a practice book about preparation for dealing with numeracy MCA for junior high school students that were valid, according to experts. This research was development research (RD) using the Plomp development model, which consists of preliminary research, a prototyping phase, and an assessment phase. At the end of the development stage, there was a formative evaluation to assess the product development's validity by two experts. The instrument used was the validation sheet for the numerical problems book. The results of this study obtained a prototype of the book that contains at least 90 numeracy problems for Junior High School students, which was categorized as valid with an average score of 89 and an excellent classification. The questions used include multiple choice, multiple complex choice, matchmaking, short essay questions, and essay. The dominant portion is in the form of complex multiple-choice questions. This book is suitable for students' preparation for the numeracy MCA.

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Section: Discussionmentioning

confidence: 99%

The development of numeracy problems for junior high school students

Wulandari

Kurniati

Wahidaturrahmi

2023

jel

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“…Where A is the cross-sectional area of the horizontal pipe (in area units), D is the diameter of the pipe (in length units), and h is the height of the water in the pipe (in length units) [15,16,18,19,20].…”

Section: Methods and Design 21 Formulation Methodsmentioning

confidence: 99%

Ultrasonic Sensor for Measurement of Water Flow Rate in Horizontal Pipes Using Segment Area

Suryana

Yudono

2023

Fidelity

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Measurement of flow rate in wastewater pipes is still challenging to be done in real-time. The main challenge in wastewater measurement is the non-homogeneity of wastewater due to the presence of solid waste material. This becomes a hindrance when using mechanical flow measurement or direct contact between the fluid and the measuring device. Therefore, the solution is to perform non-contact flow measurement between the fluid and the measuring device. In this study, a flow sensor was developed for a horizontal pipe using the cross-sectional area measurement method on a horizontal pipe measured by an ultrasonic sensor as the fluid level measuring device. The ultrasonic sensor can measure the height of the fluid level, allowing the flow velocity and cross-sectional area of the horizontal pipe to be determined. The basis of this measurement is that any flowing fluid in a pipe that experiences a change in velocity will also experience a change in volume or fluid level. This measurement is in accordance with the continuity equation. From the calibration results, an error of 1.7% was obtained for the height measurement from the ultrasonic sensor compared to the ruler used as a height calibration tool. Meanwhile, the error in the flow velocity measurement from the ultrasonic sensor compared to the calibration results using the tracker software was 4.2%. The error in volume measurement from the ultrasonic sensor compared to the standard measuring tool, a 5-liter beaker glass, was 0.8%. As a conclusion, flow rate measurement using the ultrasonic sensor with the cross-sectional area measurement method can be used to measure the flow rate in a horizontal pipe with a diameter of 11 cm.

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“…Seperti telah diketahui bersama, belajar matematika tentunya tidak lepas dari belajar bilangan. Seseorang perlu memiliki kepekaan terhadap bilangan (number sense) sebagai dasar untuk dapat memecahkan masalah matematika yang lebih kompleks (Wulandari et al, 2021). Seseorang yang memiliki kepekaan terhadap bilangan akan lebih leluasa dalam memanfaatkan pengetahuannya tentang bilangan (Wulandari et al, 2020).…”

Section: Pendahuluanunclassified

Pemecahan Masalah Program Linier Mahasiswa Pendidikan Matematika Dengan Kemampuan Number Sense Tinggi

Arjudin,

Kurniati,

Turmuzi

et al. 2024

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Pemecahan masalah (problem solving) dalam matematika termasuk kemampuan mendasar dan fundamental yang harus dikuasi oleh seseorang. Namun, penelitian terdahulu menunjukkan bahwa kemampuan pemecahan masalah mahasiswa masih cenderung berada pada kategori sedang dan rendah. Banyak faktor yang dapat menyebabkan rendahnya kemampuan pemecahan masalah mahasiswa tersebut diantaranya yakni faktor kemampuan number sense. Tujuan dari penelitian ini adalah untuk mendeskripsikan pemecahan masalah program linier mahasiswa pendidikan matematika dengan kemampuan number sense tinggi. Penelitian ini merupakan penelitian kualitiatif deskriptif dengan melibatkan 36 mahasiswa Program Studi Pendidikan Matematika tahun ketiga yang telah mengambil mata kuliah program linier. Instrumen yang digunakan yakni soal tes kemampuan number sense, soal tes pemecahan masalah, dan pedoman wawancara. Hasil penelitian ini diperoleh informasi bahwa terdapat 6 mahasiswa berkemampuan number sense tinggi yang seluruhnya hanya mencapai kategori sedang dalam melakukan pemecahan masalah. Secara umum, mahasiswa dengan kategori ini tidak menuliskan informasi mengenai kendala masalah program linier dengan lengkap pada tahap mengumpulkan informasi. Di samping itu, mahasiswa juga tidak melakukan tahap memeriksa kembali pada penyelesaian masalah karena merasa sudah yakin dengan jawaban yang diberikan. Namun penyelesaian tersebut belum tepat.

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The effect of using worksheet on students’ number sense ability

Cited by 4 publications

References 10 publications

The development of numeracy problems for junior high school students

The development of numeracy problems for junior high school students

Ultrasonic Sensor for Measurement of Water Flow Rate in Horizontal Pipes Using Segment Area

Pemecahan Masalah Program Linier Mahasiswa Pendidikan Matematika Dengan Kemampuan Number Sense Tinggi

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