Wednesday, February 8, 2012

Why Teach Science and Math?

Posted by David Wetzel


Science and Math

Science and Math

As former elementary science and math education professor, I was always encouraging preservice teachers to teach science and math from a hands-on, minds-on perspective.

My goal was single minded in the sense that for students to learn science and math their curiosity must peaked.

This was always a challenge because  most of these preservice teachers learned science and math by rote memorization of facts. Their prior knowledge and experience had few opportunities to actually investigate science phenomena and truly understand the usefulness of math.

Fear of Science and Math

So you can guess their predisposition towards science and math — they were scared to to teach either subject or outright hated these subjects.

This fear of science was a strong reason why these preservice teachers avoided teaching science whenever possible. Typically their approach was typically through art and/or reading.

Math could not be avoided, they relied heavily on worksheets and rote memorization of math facts (Saxon Math is one program that comes to mind).

Teacher workloads are such that there just isn’t time to learn and understand the languages of science and math. They also fear of looking like their students are smarter than their are in science and math.

To avoid transferring this fear to students, I taught these preservice teachers they must realize that their views are conveyed to their students.

I received this comment often from my preservice teachers–”The only reason you teach science and math so well because you like and understand science and math.”

For which I would always comment–”There are some areas of science and math I can not stand and if you cannot tell what these areas are, then I am doing my job. It is all about attitude!”

Teacher Attitudes

A teacher’s attitude affects students’ attitudes.  Some suggestions to inspire inquiry are:

  • No one knows all the answers when it comes to science or know every thing about math. No one.
  • By not knowing, we are actually modeling excellent inquiry skills for our students. For example answer questions with –  “I’m not sure about that. How can  we find the answer?”
  • Science is as much about creativity and imagination as it is about fact.  Without creativity and imagination very few of the scientific discoveries or inventions would exist today.  It’s okay to chase an idea, even if it doesn’t turn out to be the right one.
  • When we recognize the thinking skills that a science investigation develops in students, we will no longer see it as part of the curriculum that can be avoided when short o class time.
  • Our students don’t need to “know” science and math facts, they need to UNDERSTAND the concepts and how to use them.
  • A great many scientific and mathematical concepts are too difficult for younger students in particular. That’s okay! Our job is to inspire their curiosity and give them a grounding in the scientific and mathematical skills like investigation and observation, so that they can continue to develop their understanding throughout their schooling and lives.

If these suggestions are followed, then the U.S. will return as one of the leaders in scientific discovery and applications of mathematics in the world and not a follower (which we are today).

We can stop relying on bringing science and math teachers from other countries to teach our students.

Resources

Understanding Scientfic Inquiry

Problem Solving and Science Process Skills

Math Problem Solving and Case Studies

Math Teaching Strategies that Challenge Students

Parallel and Perpendicular Lines Assessment

Posted by David Wetzel

Geometric Angles

Geometric Angles

This parallel and perpendicular lines problem-based learning post-assessment tasks students to demonstrate their understanding of parallel lines, transversals, and special angle pairs.

This assessment tool can also be used as a pre-assessment to determine students prior knowledge and experiences with geometric shapes.

Designing a City

Students are tasked to design their own city. The city must have all the following correct to receive full credit.

1.     5 parallel streets (each street must be named)

2.     2 transversal streets (each street must be named)

The following buildings must be placed as directed.

1.     A gas station and a restaurant (alternate exterior angles)

2.     Your house and a school (same side interior angle)

3.     A courthouse and a bank (vertical angles)

4.     A general store and a church (corresponding angles)

5.     A library and a park (alternate interior angles)

Each building must be labeled.

Additional Resources

Challenging Math Strategies

Using Twitter in Science and Math Class

Posted by David Wetzel

Teachers work in the solitude of their classrooms, interrupted with occasional chances to talk with other teachers during the day. Twitter is an online technological tool which can break down the rigid classroom schedule barriers and allow teachers and students to collaborate.

Twitter has evolved into something beyond a trendy technology tool, avoiding the worry many teachers have about getting caught in a new flash-in-the-pan idea.

Strategy for Using Twitter in Math Class

Collecting Data for Geometric Analysis

  • Students collect information from students located in other schools regarding the dimensions of their classroom, desks, number of students, and other objects in the room which take up floor space.
  • Then students develop geometric representations of these classrooms, to determine which classroom has the greatest and least amount of square footage per student.
  • Students then share their results with all participants.

Strategy for Using Twitter in Science Class

Where in the World are You?

  • Introduce your class to the features of Google Earth by asking your Twitter network for a small amount of location specific information.
  • Challenge your class to find the teachers who have replied with location information.
  • Try to gather some evidence that you have found them - name on football field, distinct shape of building, or other features to prove they have been found.
  • Reply with this information.
  • Use different Google Earth layers of information to help with the search.

Allows students to have a concrete experience with the power of Twitter & Google Earth for finding information.

Resources

Using Twitter to Break Down Classroom Isolation

Science Investigations Using Google Earth

Middle School Google Earth Projects

Google Earth

Twitter Handbook for Teachers

Twit Poll

Twitter Group - Math Teachers (one of many to select from)

Twitter Group - Science Teachers (one of many to select from)