ANALISIS KEMAMPUAN BERPIKIR KREATIF MATEMATIS SISWA DENGAN PENERAPAN PROBLEM BASED LEARNING BERBANTU GOOGLE CLASSROOM

Pembelajaran berbasis masalah dirancang agar dapat meningkatkan kemampuan berpikir kreatif siswa dengan memberi mereka lebih banyak kesempatan untuk mengeksplorasi masalah dengan berbagai solusi. Karena sejatinya berpikir kreatif sangatlah diperlukan sebagai dasar dalam menanggapi masalah yang dihadapi guna mencari solusi yang tepat. Berdasarkan penerapan model belajar Problem Based Learning berbantu google classroom di MTs Pembangunan UIN Jakarta pada materi bangun ruang, didapatkan bahwa tingkat kemampuan berpikir kreatif matematis 22 siswa MTs Pembangunan UIN Jakarta setelah proses pembelajaran dengan model Problem Based Learning (PBL) didapatkan presentase sebesar 40,91% yaitu sekitar 9 siswa pada kategori kreatif, hal ini menunjukkan hampir separuh objek penelitian berada pada kategori kreatif, sedangkan untuk tingkat kemampuan berpikir kreatif pada kategori cukup kreatif mencapai 50% yaitu sekitar 11 orang siswa, sedangkan 9,09% yaitu sekitar 2 siswa berada pada kategori kurang kreatif. Untuk kemampuan berpikir kreatif matematis jika dilihat dari masing-masing aspek dapat dikatakan sudah terbilang cukup bagus dimana di peroleh prosentase pada aspek kelancaran ini mencapai 60,23%, aspek keluwesan/fleksibilitas sebesar 64,77%, aspek orisinalitas sebesar 69,32%, dan pada aspek elaborasi sebesar 57,95

PENGARUH MODEL PEMBELAJARAN TERHADAP PRESTASI AKADEMIS PESERTA DIDIK JURUSAN MANAJEMEN SCHOOL OF BUSINESS MANAGEMENT DAN SISTEM INFORMASI SCHOOL OF INFORMATION SYSTEM PADA BINUS UNIVERSITY

PENGARUH MODEL PEMBELAJARAN TERHADAP PRESTASI AKADEMIS PESERTA DIDIK JURUSAN MANAJEMEN SCHOOL OF BUSINESS MANAGEMENT DAN SISTEM INFORMASI SCHOOL OF INFORMATION SYSTEM PADA BINUS UNIVERSITY - pembelajaranregular, pembelajaranonline, prestasi akademis peserta didik

Replacement and late formation of atmospheric N2 on undifferentiated Titan by impacts

Saturn’s moon, Titan, has remarkable surface features—a massive N2 atmosphere and hydrological cycle of CH4—that are often compared with that of Earth^1^. However, the origin and evolution of Titan’s atmosphere remains largely unknown. The proposed formation mechanisms for Titan’s N2 require a prolonged, warm proto-atmosphere during accretion^2-4^. These mechanisms accordingly would not have worked efficiently if Titan stayed cold, as indicated by the incompletely differentiated interior observed by Cassini^5^. Because formation of a massive secondary atmosphere on a planetary body would associate with a major differentiation of its sold body during accretion^6–8^, the presence of such an atmosphere on undifferentiated cold Titan poses a serious dilemma on our view of how planetary bodies develop atmospheres. Here we propose a new mechanism for the post-accretion formation of Titan’s N2 to resolve this problem: conversion and replenishment of N2 from NH3 contained in Titan by impacts during the late heavy bombardment (LHB)^9^. Our results show that Titan, regardless of its thermal history, would acquire sufficient N2 to account for the current atmosphere during the LHB and that most of the pre-LHB atmosphere would have replaced by impact-induced N2. This is the first scenario capable of generating a N2-rich and nearly primordial Ar-free atmosphere on undifferentiated cold Titan. We also suggest that Titan’s N2 was delivered from a different source in the solar nebula compared with Earth and that the origins of N2 on Titan and Triton are fundamentally different with that of N2 on Pluto

Employing the model of analyze of variance in the study of regional tourism development in the Black Sea countries

All efforts to be made as to analyze the tourism activity on the Black Sea countries are justified by the tremendous potential due to the natural and cultural resources that are largely miscellaneous and of high quality. Those features turn the Romania, Bulgaria, Ukraine, Georgia and Turkey into attractive destinations for tourists. The main problem that occurs refers to the fact that the existence of some resources is not reason enough to make tourists choose such destinations. The system of the tourism statistic indicators has the purpose to characterize quantitatively and qualitatively, the process of the tourist activity and the causal relation between the factors that influence it. One of the main functions of the tourism indicators system is the characterization of the economic relation of Black Sea countries with other countries, of the efficiency of the cooperation relations in the frame of the international tourism relations. An attempt to draw up a coherent effective strategy for developing the regional tourism in the region of Black Sea in accordance with the market economy must begin with a realistic evaluation and analysis of the actual state of the tourism in the region and must have a starting point in a comparative analysis with the neighbourhood, from central and eastern Europe. A model of bifactorial variance analysis with regard to the issue of international tourism development in these countries is important for the economic and social policy, by sustaining the hypotheses about the existence of differences in average number of nights spent by foreign tourists in hotels and similar establishments between countries. This study aims at performing such evaluation using the data offered by the CESTAT Statistical Bulletin and the indicator selection and interpretation have taken into account the facilities of the actual information system. Thus, for such an analysis, data are depicted in a bidimensional matrix with r x s size and with xij elements which describe the average number of nights spend by foreign tourists in hotels and similar establishments, when one factor is on level i, i= (countries) and another on level j, j= (years). On the one hand, we analyze whether the differences recorded over the mentioned countries in the average number of night spend in hotels have statistic significance or not. In the other hand, we study whether the differences recorded over the years have statistic significance. A research into this issue can use the absolute total number of overnight stays of foreign tourists, but in order to ensure comparability of data and because there are differences between countries in number of bed-places, we proceed to turn absolute total figures in average figures. After computation for four years (1997-2000), for the countries: Czech Republic, Hungary, Poland, Romania, Republic of Slovenia and Slovak Republic and for a type I error probability a=0.05, we find the values for Fisher-Snedecor test for statistic significance of the differences between countries: Fr-1;(r-1)(s-1)=F5;15=71.776>Ftab 0.05;5;15=4.62 and between years: Fs-1;(r-11)(s-1)=F3;15=0.02

Titan's Obliquity as evidence for a subsurface ocean?

On the basis of gravity and radar observations with the Cassini spacecraft, the moment of inertia of Titan and the orientation of Titan's rotation axis have been estimated in recent studies. According to the observed orientation, Titan is close to the Cassini state. However, the observed obliquity is inconsistent with the estimate of the moment of inertia for an entirely solid Titan occupying the Cassini state. We propose a new Cassini state model for Titan in which we assume the presence of a liquid water ocean beneath an ice shell and consider the gravitational and pressure torques arising between the different layers of the satellite. With the new model, we find a closer agreement between the moment of inertia and the rotation state than for the solid case, strengthening the possibility that Titan has a subsurface ocean.Comment: 11 pages, 4 figure

The global energy balance of Titan

The global energy budget of planets and their moons is a critical factor to influence the climate change on these objects. Here we report the first measurement of the global emitted power of Titan. Long-term (2004–2010) observations conducted by the Composite Infrared Spectrometer (CIRS) onboard Cassini reveal that the total emitted power by Titan is (2.84 ± 0.01) × 10^(14) watts. Together with previous measurements of the global absorbed solar power of Titan, the CIRS measurements indicate that the global energy budget of Titan is in equilibrium within measurement error. The uncertainty in the absorbed solar energy places an upper limit on the energy imbalance of 6.0%

The Ketchwitz Legends Book 1

This is a story the author started to work on out of boredom during COVID-19.https://dc.ewu.edu/covid/1040/thumbnail.jp