4th graders worked on types of triangles, according to the sides and according to the angles, and they also worked on type of lines (point, line, ray, line segment, parallel lines, perpendicular lines, intersecting lines):

#gallery-1 {
margin: auto;
}
#gallery-1 .gallery-item {
float: left;
margin-top: 10px;
text-align: center;
width: 33%;
}
#gallery-1 img {
border:… Llegeix més»