This word problem may be used for instructional or assessment purposes, depending on where students are in their understanding of addition and how the teacher supports them.

Students who are defiant or non-compliant can be among the most challenging to teach. They can frequently interrupt instruction, often do poorly academically, and may show little motivation to learn. There are no magic strategies for managing the behaviors of defiant students. However, research shows that certain techniques tend to work best with these children and youth: (1) Give the student positive teacher recognition. Even actions as simple as greeting the student daily at the classroom door or stopping by the student’s desk to ask ‘How are you doing?’ can over time turn strained relationships into positive ones. (2) Monitor the classroom frequently and intervene proactively to redirect off-task students before their mild misbehaviors escalate into more serious problems. (3) Avoid saying or doing things that are likely to anger or set off a student. Speak calmly and respectfully, for example, rather than raising your voice or using sarcasm. (4) When you must intervene with a misbehaving student, convey the message to the student that you will not tolerate the problem behavior—but that you continue to value and accept the student. (5) Remember that the ultimate goal of any disciplinary measure is to teach the student more positive ways of behaving. Punishment generally does not improve student behaviors over the long term and can have significant and lasting negative effects on school performance and motivation. (6) Develop a classroom ‘crisis response plan’ to be implemented in the event that one or more students display aggressive behaviors that threaten their own safety or the safety of others. Be sure that your administrator approves this classroom crisis plan and that everyone who has a part in the plan knows his or her role. One final thought: While you can never predict what behaviors your students might bring into your classroom, you will usually achieve the best outcomes by remaining calm, following pre-planned intervention strategies for misbehavior, and acting with consistency and fairness when intervening with or disciplining students.

Help your child explore the world of science by engaging in some exciting and fun investigations together!
Many science activities for babies and toddlers will principally involve building language.
As you describe and name interesting phenomena, your child will be exposed to a rich variety of new words.
The first or second-grader is better able to record her experiences and make some predictions based on her extra years of experience.
Your preschooler or kindergartner is usually developmentally capable of physically engaging with things on his own, and has gained enough facility with language to begin describing and discussing his experiences.

This activity is a forensic based physical science inquiry investigation where students collaborate in groups and use observations to determine how Newton's Laws of Motion are applied in finding evidence in a car and truck trailer accident. Their evidence will be used in a presentation to verify consistency in police and witness reports to support the plantiff or defendent in the court case.

This activity is a field investigation of puddles where students gather data and record their findings.

This is an introductory physics lab where students will review scientific measurement concepts, and then develop a procedure, in which they will use the concepts of proper precision in measurement and significant figures, to determine the density of a marble.

This activity is a lab investigation where students gather data which compares 2 types of bubble gum, while learning to use the scientific method to collect qualitative and quantitative data using SI units.

This collection uses primary sources to explore the 1925 Scopes Trial. Digital Public Library of America Primary Source Sets are designed to help students develop their critical thinking skills and draw diverse material from libraries, archives, and museums across the United States. Each set includes an overview, ten to fifteen primary sources, links to related resources, and a teaching guide. These sets were created and reviewed by the teachers on the DPLA's Education Advisory Committee.

Students embark on a scavenger hunt around the school looking for indoor air pollution and mapping source locations.

An active problem-based assignment that uses the Genbank database to teach the basics of molecular biology and molecular evolution

This activity is a year long project observing the changes in a specific tree. It includes using all the senses in the observation and making two different booklets to record what we observe. It also includes several picture story books that enhance the lesson.

In this task students use ratio and rate reasoning to solve the real-world problem of placing a security camara in a shop.

This activity is a lab investigation where students gather data on a seed or seeds that have been planted per their own design.

The purpose of this task is to identify the structure in the two algebraic expressions by interpreting them in terms of a geometric context. Students will have likely seen this type of process before, so the principal source of challenge in this task is to encourage a multitude and variety of approaches, both in terms of the geometric argument and in terms of the algebraic manipulation.

Explore your own straight-line motion using a motion sensor to generate distance versus time graphs of your own motion. Learn how changes in speed and direction affect the graph, and gain an understanding of how motion can be represented on a graph.

The purpose of this task is to help students see that 4_(9+2) is four times as big as (9+2). Though this task may seem very simple, it provides students and teachers with a very useful visual for interpreting an expression without evaluating it.

Students learn about seismology by using a sample seismograph constructed out of common classroom materials. The seismograph creates a seismogram based on vibrations caused by moving a ruler. The students work in groups to represent an engineering firm that must analyze the seismograph for how it works and how to read the seismogram it creates.

This activity asks students to review the demographic and lifestyle statistics available at ERsys.com, and determine which city or location would provide the best consumer market opportunity for the given problem.

There are a couple of ways to solve this real world word problem.

This task is a modeling problem which ties in to financial decisions faced routinely by businesses, namely the balance between maintaining inventory and raising short-term capital for investment or re-investment in developing the busines