The teaching of conceptual understanding is a key objective in the field of science education. But students, on average, do not adequately understand the concepts in a large number of science subjects. This is the case with Ethiopia's students as well. Additionally, conventional instruction is the primary method used by Ethiopian school teachers.…

The mechanics by which unique individuals are built from the instructions encoded in DNA is too advanced for elementary-age children. However, students can easily understand that organisms have observable traits and that each individual has a unique combination of traits, ideas that are included in the "Next Generation Science Standards"…

This article presents an activity that uses sandwich bags to represent an individual's genome (their genetic make-up), and two variations of various objects representing the alleles of various genes. This activity includes the major components of an introductory genetics unit: from gamete production through probabilities of expected offspring…

These supplementary units are designed to help students with special needs learn and apply agricultural skills in the areas of animal breeding, animal nutrition, leadership, and power tools. Specific competencies are listed as study questions at the beginning of each of the 10 self-paced and self-contained units. Skill sheets, activity sheets, and…