Week 18 Objectives

Use place value understanding and properties of operations to add and subtract.
2.NBT.B.5	Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

Earth Systems, Structures and Processes Essential Standard and Clarifying Objectives
2. E.1 Understand patterns of weather and factors that affect weather.
2.E.1.1 Summarize how energy from the sun serves as a source of light that warms the land, air and water.	2.E.1.2 Summarize weather conditions using qualitative and quantitative measures to describe: • Temperature • Wind direction • Wind speed • Precipitation	2.E.1.3 Compare weather patterns that occur over time and relate observable patterns to time of day and time of year.	2.E.1.4 Recognize the tools that scientists use for observing, recording, and predicting weather changes from day to day and during the seasons.
Students know that light travels from the sun to the earth. Some of this light is reflected back into space, some is absorbed by the land, water, and air.	Students know that numbers are used to describe air temperature, wind speed, and the amount of precipitation that occurs. Students know that wind direction is described using cardinal directions (N, S, E, W) and numbers. Students know how to measure air temperature with a thermometer, wind direction with a wind sock or vane, wind speed with an anemometer, and precipitation with a rain gauge.	Students know that over time there are patterns that can be observed in the weather and that these patterns are influenced by the time of day (cooler morning, warmer afternoon) and the time of year (seasonal changes).	Students are familiar with manual and electronic weather instruments, sensors, and computers as well as how they can produce a ‘running record’ of weather changes that occur over time by collecting and recording data. This collection of data can be analyzed as a basis for predicting weather trends.