When you start using alternative assessment, start small. One example of this is to use an old multiple choice question without providing the answers. Don't add to your workload if you can help it. Look for things that you already do to find evidence of students' thinking and learning. Be realistic about the values of your school community.
Science journals fit in well in a school that emphasizes writing.
If graded report cards are emphasized, be sure that you can translate your assessments into traditional grades. Active Assessment for Active Science. New York State Education Department. A print copy of the resource guides was mailed to every district. A Teacher's Guide.