Interesting Information for Teachers
what is a wormhole?
Wormholes are solutions to the Einstein field equations for gravity that act as "tunnels," connecting points in space-time in such a way that the trip between the points through the wormhole could take much less time than the trip through normal space.
The first wormhole-like solutions were found by studying the mathematical solution for black holes. There it was found that the solution lent itself to an extension whose geometric interpretation was that of two copies of the black hole geometry connected by a "throat" (known as an Einstein-Rosen bridge). The throat is a dynamical object attached to the two holes that pinches off extremely quickly into a narrow link between them.
This analysis forces one to consider situations...where there is a net flux of lines of force through what topologists would call a handle of the multiply-connected space and what physicists might perhaps be excused for more vividly terming a ‘wormhole’.
– John Wheeler in Annals of Physics
Note to Visitors
Friday, October 28, 2011
Alan Kay: A powerful idea about teaching ideas
Wednesday, October 12, 2011
VTC Training CD for C Programming
- Introduction
- A Basic C Program
- Basic Elements of a C Program
- Conditional Code
- Loops
- Arrays
- Strings and Characters
- Advanced Operators
- The C Preprocessor
- Functions
- Structures
- The Compilation Process
- Basic Pointers
- Scope
- Dynamic Memory
- The Standard C Function Library
- Bitwise Operators
- Advanced Pointers
- Function Pointers
World Teachers' Day 2011 joint message
Teachers also have a critical role to play in the equity and quality of education systems. If qualified female teachers avoid postings in disadvantaged and rural areas for fear of not being able to find a partner or bring their husbands, how can we convince reluctant parents to send their girls to school? If effective male teachers leave the profession due to difficult working and living conditions, leaving behind an education system marked by low quality, repetition and drop-out (Mulkeen, 2010), how can school be relevant and a worthwhile investment for students and their parents?
Sunday, October 9, 2011
A Sample Lesson
- Presentation of content.Melinda's students are asked to read the chapter in the social studies textbook about the Sonoran Desert. Afterward, Malinda reads students the children's bookAround One Cactus: Owls, Bats and Leaping Ratsby Anthony D. Fredericks (a story about the animals that live around a Saguaro cactus—particularly nocturnal animals). Her students are excited about the strange and wonderful animals that live in the desert. Finally, Malinda shows a video about desert life that was filmed by a friend who lives in Tucson, Arizona.
- Teamwork.Melinda divides her class into five separate groups of five students. Each member of a group is given a different assignment; for example, in the first group, Tyrone is responsible for researching the animals of the desert; Elena is charged with learning about the plant life of the desert; Ramon is responsible for checking out the climate of the Sonoran desert; Sarah is assigned the Native American cultures that live in the desert; and Clarice will read about important desert towns and cities.
- Each person goes off to do her or his individual research. To help this process, each student also meets with students who have the identical assignment (one from each jigsaw group). For example, students assigned to the “Animals of the Desert” group meet as a team of specialists, gathering information, becoming experts on their topic, and rehearsing their presentations (this is an “expert” group).
- After each student has completed her or his research, she or he comes back to the original jigsaw group. Each person presents a report to the group. For example, the “Animal Expert” (Tyrone) in each group teaches the other group members about desert animals. The “Climate Expert” (Ramon) shares what he has learned with the entire team. Each student in each group educates the whole group about her or his specialty. Each person in the group listens carefully to the information presented by a teammate, asking questions for clarification.
- Individual assessment.Upon the completion of the cooperative learning activity, Malinda gives each student a quiz on the desert. Students know ahead of time the components of that quiz because they were the same components they studied in their cooperative learning groups (animals, plants, climate, Native American cultures, and towns and cities).
- Team recognition.Every individual in the class makes significant achievement on the quiz. Malinda takes time to acknowledge the work and effort of all five teams in helping their individual members improve. The entire class is rewarded with an extra 15-minute recess period.
Cooperative learning can be a teaching tool that helps you have a positive impact on your students' comprehension of important information. In fact, it might well be one of the most flexible and powerful strategies you can use.
Teaching with Cooperative Learning
In Lesson Methodologies ,I talked about the ways in which you can present information to your students. These instructional activities must be done prior to any cooperative learning activity. Cooperative learning is not a self-instruction model, but rather a way for students to “mess around” with previously presented material. In short, cooperative learning comes after you've taught something to your students.
This is the time—after you've taught the new material—when students are engaged in a cooperative learning activity. The cooperative learning strategy (Jigsaw, STAD, Think-pair-share, Numbered heads) is selected and explained to the entire class. Students are divided into various teams (using the criteria previously explained) and provided sufficient time to complete their assigned duties.
In cooperative learning, the objective is not the production of a single set of correct answers for the entire group but rather the development and enhancement of each member's achievement. Although members of the team work together to master information, each individual member must be assessed in relation to her or his mastery of the content. In short, everybody is tested in line with her or his achievement potential.
It's most appropriate to recognize and celebrate the efforts of the team as a whole. It's equally important to celebrate the efforts of the team to assist individual members in learning a specific body of knowledge. These ceremonies can be either public or private. Teachers have rewarded teams with an extra recess, a “homework pass,” a snack, a certificate or award, or some other appropriate reward. In many cases, the reward can be as simple as a classroom cheer or extended series of high fives.
Self-Assessment
"Independence, creativity, and self-reliance are all facilitated when self-criticism and self-evaluation are basic and evaluation by others is of secondary importance." – Carl Rogers
Portfolio Assessment Guide
Performance Assessment
Authentic Assessment
In 1935, the distinguished educator Ralph Tyler proposed an "enlarged concept of student evaluation," encompassing other approaches besides tests and quizzes. He urged teachers to sample learning by collecting products of their efforts throughout the year. That practice has evolved into what is today termed "authentic assessment," which encompasses a range of approaches including portfolio assessment, journals and logs, products, videotapes of performances, and projects.
Authentic assessments have many potential benefits. Diane Hart, in her excellent introduction toAuthentic Assessment: A Handbook for Educators, suggested the following benefits:
- Students assume an active role in the assessment process. This shift in emphasis may result in reduced test anxiety and enhanced self-esteem.
- Authentic assessment can be successfully used with students of varying cultural backgrounds, learning styles, and academic ability.
- Tasks used in authentic assessment are more interesting and reflective of students' daily lives.
- Ultimately, a more positive attitude toward school and learning may evolve.
- Authentic assessment promotes a more student-centered approach to teaching.
- Teachers assume a larger role in the assessment process than through traditional testing programs. This involvement is more likely to assure the evaluation process reflects course goals and objectives.
- Authentic assessment provides valuable information to the teacher on student progress as well as the success of instruction.
- Parents will more readily understand authentic assessments than the abstract percentiles, grade equivalents, and other measures of standardized tests.
MOTIVATING STUDENTS: 8 SIMPLE RULES FOR TEACHERS
Saturday, October 8, 2011
Standards for Good Teaching
- You as a person
- Student orientation
- Task orientation
- Classroom management
- Lifelong learning
Your Secret Weapon: Wait Time
- The length of student responses increases 400 to 800 percent.
- The number of unsolicited but appropriate responses increases.
- Failure to respond decreases.
- Student confidence increases.
- Students ask more questions.
Break the Ice
- INTRODUCE MYSELF. Participants introduce themselves and tell why they are there. Variations: Participants tell where they first heard about the class, how they became interested in the subject, their occupations, home town, favorite television program, or the best book they have read in the last year.
- INTRODUCE ANOTHER. Divide the class into pairs. Each person talks about him/herself to the other, sometimes with specific instructions to share a certain piece of information. For example, "The one thing I am particularly proud of is..." After five minutes, the participants introduce the other person to the rest of the class.
- CHARACTER DESCRIPTIONS. Have students write down one or two adjectives describing themselves. Put these on a stick-on badge. Have class members find someone with similar or opposite adjectives and talk for five minutes with the other person.
- I'VE DONE SOMETHING YOU HAVEN'T DONE. Have each person introduce themselves and then state something they have done that they think no one else in the class has done. If someone else has also done it, the student must state something else until he/she finds something that no one else has done.
- FIND SOMEONE. Each person writes on a blank index card one to three statements, such as favorite color, interest, hobby, or vacations. Pass out cards so everyone gets someone else's card. Have that person find the person with their card and introduce themselves.
- FAMOUS PERSON. People write a famous name on a piece of paper and pin it on someone else's back. Person tries to guess what name is pinned on his/her by asking others around the room yes or no questions. Variation: Use famous place instead of famous person.
- MY NAME. People introduce themselves and tell what they know about why they have their name (their mother wanted to name me after her great aunt Helen who once climbed Pike's Peak in high heels, etc.). It could be the first, middle or nickname.
- HOW DO YOU FEEL? Ask the students to write down words or phrases that describe their feelings on the first day of class. List the responses on the blackboard. Then ask them to write down what they think you as the teacher are feeling this first day of class. List them on the blackboard in a second column and note the parallels. Briefly comment on your feelings and then discuss the joint student/teacher responsibilities for learning in the course.
- COMMON GROUND. This works best for small groups or for each small group sitting together as a team (4-6 learners). Give the group a specific time (perhaps 5 minutes) to write a list of everything they all have in common. Tell them to avoid the obvious ("we're all taking this course"). When time is up, ask each group how many items they have listed. For fun, ask them to announce some of the most interesting items.
- ME TOO. This also works best for small groups or foe each small group sitting together as a team (4-6 learners). Everyone in the group gest 10 pennies/toothpicks/scrap of papers, etc. The first student states something he/she has done (e.g. water skiing). Everyone else who has done the same thing admits it and puts one penny in the middle of the table. Then the second person states something (e.g. I have eaten frogs' legs). Everyone who has done it puts another penny in the center. Continue until someone has run out of pennies.
Collection of Books on Teaching Methods
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