The aim of this study is to analyze the weaknesses among second-grade primary school pupils in learning Geometry. According Mathematics Standard-Based Curriculum for Primary School, Geometry topic comprises three content standards which are three-dimensional shapes, two-dimensional shapes and problem-solving. Previous studies have found that difficulties geometry lack basic skills mathematics. ...

In this paper, we consider the 2D second grade fluid past an obstacle satisfying standard non-slip boundary condition at surface of obstacle. Second model is a well-known non-Newtonian model, with two parameters: $\alpha$ representing length-scale, while $\nu > 0$ corresponding to viscosity. We prove that, under constraint = {o}(\alpha^\frac{4}{3})$, suitable initial velocity converges Euler as...

This study aims to forecast pupils' moral development depending on the demographics of family. used a descriptive methodology and correlational approach. All second-period primary school pupils in Tehran's 4th district were included study's population, 373 individuals chosen by stratified cluster random selection. The Lotfabadi Moral Development Questionnaire, which comprises 18 short tales 46 ...

This work proposes a qualitative study for the fractional second-grade fluid described by operator. The classical Caputo operator is used in investigations. exact analytical solutions of constructed problems proposed model are determined using Laplace transform method, which particularly includes derivative. impact presented; especially, acceleration effect noticed paper. parameters’ influences...