Mrs. Berg's Basics

  Perimeter and Area We are working on perimeter and area. We have focused quite a bit on the formulas that are used to find both. In fact, your kiddo might have come home talking about the 3 good Fs in math. This is a saying that we use to help us remember to use the formula when finding perimeter and area. F ind the formula and write it down. F ill in the formula with the correct measurements. F ind the answer and label the unit. Perimeter  is the distance around a two-dimensional shape. We focused on three formulas to find perimeter: P = s + s + s (perimeter = side + side + side) - this formula can be used on any shape P = 4 x s (perimeter = 4 x side) - this formula works for squares P = (2 x l) + (2 x w) or P = 2(l +w); perimeter = (2 x length) + (2 x width) - this formula works for rectangles Area  is the size of a surface or the amount of space inside the boundary of a flat (2-dimensional) object. We focused on one formula to find the area of a rectangle: A = l x w ...

  Data Representations We have been learning about three new ways to represent data. We have learned about dot plots, frequency tables, and stem-and-leaf plots. A  dot plot  is a graphical display of data using dots. It is very similar to pictographs. A  frequency table  is a table that shows a set of numbers/scores and their frequency (how many times each one occurs). A  stem-and-leaf plot  is a plot where each data value is split into a "leaf" (usually the last digit) and a "stem" (the other digits). For example "32" is split into "3" (stem) and "2" (leaf). The "stem" values are listed down, and the "leaf" values are listed next to them. This way the "stem" groups the scores and each "leaf" indicates a score within that group. Here are the basic steps to creating a stem-and-leaf plot: Here are some videos about these data representations: Stem and Leaf Plot Frequency Tables and Dot Plots Here ar...

  Energy Flow in Living Systems An  ecosystem  includes all of the living things (plants, animals and organisms) in a given area, interacting with each other, and also with their non-living environments (weather, earth, sun, soil, climate, atmosphere). Each ecosystem has its own energy flow. This energy flow includes food chains and food webs. A  food chain  shows how each living thing gets food, and how nutrients and energy are passed from organism to organism. Food chains begin with plant-life, and end with animal-life. Some animals eat plants, some animals eat other animals. A simple food chain could start with grass, which is eaten by rabbits. Then the rabbits are eaten by foxes. A  food web  consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains. Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem. All of the interconnected and ...