- Use algorithms based on place value to subtract within 1000. - Use algorithms based on place value to add within 1000. - Use properties of operations to subtract within 1000. - Use properties of operations to add within 1000. - While moving to the right across the places in a number the digits represent smaller units.

- Amplitude is half the distance between the trough and peak of a wave. - Different electromagnetic waves are defined by frequency and wavelength. - Red light has the longest wavelength/lowest frequency of visible light. - Electromagnetic waves travel at different speeds as they transmit through different types of matter. - Wavelength is the distance between two peaks of a wave. - Wave speed is the distance a wave travels over a particular amount of time. - Electromagnetic waves are transverse waves. The frequency of an electromagnetic wave is proportional to its energy. - The shorter the wavelength of an electromagnetic wave, the higher its frequency. - Frequency is the number of waves that pass a point in a particular amount of time. - Visible light includes all of the colors of the rainbow. - Electromagnetic waves can transmit through a vacuum. - Intensity of light decreases with distance from its source. - Short wavelength electromagnetic waves have high frequencies. - Nothing can travel faster than the speed of light. In a light wave, greater amplitude corresponds to greater intensity and brightness. - Long wavelength electromagnetic waves have low frequencies. - Some sources of light emit different frequencies/wavelengths of light. - Violet light has the shortest wavelength/highest frequency of visible light. - Transverse waves cause matter to move perpendicular to the direction in which the wave travels. - Light is the transfer of energy via electromagnetic waves.

- Use information from Line Plots to answer questions and solve addition and subtraction of fractions problems. - Scale line plots with measurements to show fractions of a unit (1/2, ¼, and 1/8).

- Fossils form in sedimentary rock when a dead organism is buried under layers of sediment and hardens into rock over time. - Scientists can use fossils to compare properties of organisms alive today with those that lived long ago. - A trace fossil is indirect evidence of a living organism, such as a footprint, burrow, or waste. - Sedimentary rocks form from weathered rock pieces and/or the remains of organisms that are deposited in layers and cemented together. - Fossil evidence provides clues about the environment in which organisms lived. - Most fossils are found in the layers of sedimentary rock. - Fossils provide evidence of organisms that lived long ago but have become extinct. - Fossils provide evidence about the properties of organisms that lived long ago. - An example of animals that became extinct are the dinosaurs. - Fossils are the remains or traces of living organisms that lived a long time ago. - Fossil evidence provides clues about how Earth’s landscape has changed over time. - Dead organisms can be preserved as fossils in sap, ice, or tar. - Some extinct species look similar to species that exist today. - Extinction occurs when all of the members of a species die.

- Understand subtraction of fractions as joining parts referring to the same whole. - Understand addition of fractions as joining parts referring to the same whole. - When fractions are greater than one they are still a sum of unit fractions (ex: 5/4 = 5 x ¼ = 1 ¼ )