This smartboard file can assist you in teaching students to write out deductive proofs in algebra.
The Do Now is made up to 2 parts. In part 1students think about some standards algebraic properties such as the distributive property, the addition/subtraction property of equality, and the multiplication/division property of equality. Student move the description next to the example.
In part two they think about the transitive property, the symmetric property, and the reflexive property. Similarly, they move the term next to the example.
In the next five pages an algebraic or geometric based question is posed and students write statements and pick out the reasons from a list at the bottom of the page. The reasons can be moved to the correct location in the proof.