Science 7 focuses on the themes of cell structure and function with an investigation into cellular organization and examination of the organs and organ systems, human biology and health, and earth/environmental studies. In class with teacher Aidan Clark-Long, the students have been learning about the key concepts of what makes a cell, the different types, its components, and the specialized subcellular structures that have a specific function known as organelles. Mr. Clark-Long provided an overview on how plant and animal cells have similar organelles, while other organelles are unique to each of them.

The lab activity tasked the students with observing samples of animal and plant cells under a microscope with the objective of comparing the similarities and differences between the two types. The samples were divided into three slide sets of animal tissues and cells, plants and insects, and microbes and macroinvertebrates. Following the instruction prompt, the students added wet-mount slides, applied specific stains to the cover slip, and carefully placed their sample cell slides under the lens for viewing.

As required, each student selected three samples of both animal and plant cells to compare and contrast the structures. Once the observations were complete, the students filled out a worksheet with drawings and labels of each sample and answered a series of reflection questions.

 

Mr. Clark-Long shared that the next activity relating to the unit of study is the 3-D Cell Model project. The students are tasked with building a three-dimensional model of a plant cell or an animal cell no larger than 12 inches × 12 inches. The construction requirements include the use of recycled or repurposed materials only, all cell structures must be physically built, separate types of material must be used for every different cell structure, every required structure must have a visible color, and every cell part must be labeled with its full, and correct name.

Additionally, the students must complete a series of questions in which they select two organelles from the 3-D model that work together, research their functions, and explain how they help the cell function. The students will be graded on both the physical model and the written component.