أرسل هذا في رسالة قصيرة: Exploring students’ conceptual understanding of parallelograms based on Geogebra

  ______   _    _      _____    _____    _    _   
 /_____// | || | ||   / ___//  |  ___|| | \  / || 
 `____ `  | || | ||   \___ \\  | ||__   |  \/  || 
 /___//   | \\_/ ||   /    //  | ||__   | .  . || 
 `__ `     \____//   /____//   |_____|| |_|\/|_|| 
 /_//       `---`   `-----`    `-----`  `-`  `-`  
 `-`