In this activity, students investigate the effects of changing force in the acceleration of a cart. Students set up a lab cart that can travel over a pulley by changing the mass on the opposite end of a string. After collecting data, they will use Microsoft Excel to create a velocity-time graph from their data and then find the slope (acceleration). Students should be able to use simple algebraic equations to calculate velocity (v = d/t) and should be familiar with Excel or another computer graphing program. A second graph of acceleration versus force is created to see if Newton's second law is supported by the experiment.

In this lesson, students use number lines to solve addition and subtraction problems involving positive and negative fractions and decimals. They then verify that the same rules they found for integers apply to fractions and decimals as well. Finally, they solve some real-world problems.

In this lesson, students learn the definition of rational number, and they write rational numbers as ratios of integers and as repeating or terminating decimals.

In this investigation, students will observe cells from various sources of their choice. Plant, animal and bacterial cells will be observed as well as cells from multicellular organisms and single celled organisms. Students will be expected to provide written descriptions as well as detailed drawings of the cells they observed. Students will be asked to compare and contrast the cells they observed and provide a technique they would use to categorize the cells they observed.

In this activity, children will place a seed in soil, care for it, and track the plant?s growth. By caring for a plant, children will contribute to Lady Bird Johnson?s mission of beautification. Observation and measuring skills will be developed through tracking the plant's growth.

In this activity, students learn the meaning of Periodicity, how and why the periodic table is organized, and some of the trends in the periodic table. They do this by playing a game that is sort of a puzzle in which there is one piece missing and they need to figure out what it looks like and where it belongs.

This resource includes a quiz which focuses on Reading Literature standard 4. Students will read excerpts of poetry to responding to multiple choice questions. The activity also includes one open-ended response question.

This chapter from the online textbook Everything Science discusses classification of matter and outlines the differences between elements, compounds, and mixtures. Each chapter comes with video lessons and explanations which help bring the ideas and concepts to life.

This resource includes a short quiz which focuses on Reading Information standard 1. Students will read an excerpt from King's Letter from Birmingham Jail and respond to open-ended questions. Students are tasked with using textual evidence by citing specific lines.

This resource includes a quiz which focuses on Reading Information standard 2. After reading the excerpt from Winston Churchill's speech, students will respond to open-ended questions.

This resource includes a quiz which focuses on Reading Information standard 3. Students will read an excerpt and respond to the open-ended questions.

This resource includes a quiz which focuses on Reading Information standard 4. Students will read an excerpt and attempt to define vocabulary within context using available clues. Students are tasked with citing specific clues.

This resource includes a quiz which focuses on Reading Information standard 7. Students will read an excerpt pertaining to global warming before attempting to answer open response questions.

This resource includes a short quiz which focuses on Reading Informational standard 8. Students will read the excerpt taken from a blog and respond to four open response questions.

This resource includes a short quiz which focuses on Reading Informational standard 9. Students will read an excerpt from "The Gettysburg Address" and respond to three short questions.

This resource contains a study guide on ratios, proportions and percentages, and how they relate to dividing something into parts. It also provides a self-check section after each topic.

Students will share their knowledge of the Earth and Sun as it pertains to day and night and generate questions about the causes of day and night using a KWL chart. They will then use a flashlight and model of the Earth to investigate how the rotation of the Earth affects night and day. Students will discuss their findings, adding what they learned to their charts, and diagram their understanding in their journals.

In this lesson, students will continue to apply their understanding of compound independent events. They will calculate probabilities and represent sample spaces with visual representations.

In this activity, students play a board game in which players try to ensure the survival of their animal species while dealing with problems (such as habitat destruction, pollution, or natural disasters) the animals encounter during the game. Prior to the game, the book Brother Eagle, Sister Sky by Susan Jeffers should be read aloud to the students and used to engage student thinking about human and environmental impact on animal survival.

In this lab, students will investigate the solubility and miscibility of several substances using water as the solvent. Students will submit a lab report that includes predictions, data table, and analysis explaining whether materials were soluble or insoluble in molecular terms and/or drawing molecular diagrams of the substances.