SIGHT READING: (Turning the written symbol on paper into sound. One might say this is a 'miracle' - only musicians can do this...

a.    Read something new to your experience but within your capability. Points to remember:
 

1. Look at the time signature. The top figure tells the number of beats in every bar. The bottom figure indicated what type of not is represented at every beat.
2: How fast (tempo) should the beat (pulse) go? Establish this in your mind while check the next items...
3. Look at the Key (or Scale) Signature. Try to think about these flats or sharps in the Scale. 
4. Is it in a Major or Minor Scale? If a Minor Scale then there may be some 'accidentals' in the piece...Check the last note as this will inevitably be the Key note or Scale name.
5.  What style is required for the piece? 
6.  How loud? What dynamic is written and are there changes to the dynamics of the piece? Look for expression marks.
7. Check out the phrases or breathing places
8. Which beat of the bar does the first (and subsequent) phrases start
9. Think the pitch of the piece in your mind.
10. Now count at least 2 bars in before you start...

b.    Transpose something into all necessary keys for trumpet. Trumpet in C, Trumpet in D, Trumpet in A, Trumpet in Eb etc. within your experience. 
 

Playing on a Bb Trumpet - Parts written for:
 
Trumpet in C Read the Key Signature up 1 tone ( adding 2#'s or taking away 2b's ) and play every note one note higher in the new key signature. (Line up to the next space - space up to the next line)
Trumpet in D Read the Key Signature up a Major 3rd ( adding 4#'s or taking away 4b's ) and play every note a 3rd  higher in the new key signature. (Line to line - space to space)
Trumpet in A  Change the Key Signature to Flats. This will in effect lower every note ie E Major (4#'s) would become Eb major (3b's). Read the notes as written. OR If it is written in a Flat key, then add 5#'s to the Key Signature and read each note down 1 note. Let the key signature take care of the notes.
Trumpet in Eb Read the Key Signature up a Perfect 4th ( adding 1b or taking away 1# ) and play every note a 4th   higher in the new key signature. (Line to space - space to line)
Trumpet in E Read the Key Signature up a Augmented 4th ( adding 6#'s or taking away 6b's ) and play every note a 4th higher in the new key signature. (Line to space - space to line)
Trumpet in F Read the Key Signature up a Perfect 5th ( adding 1# or taking away 1b) and play every note a 5th higher in the new key signature. (Line to line - space to space)

See my suggestions for books which will help your Sight-reading and Transposition

TAKE A BREAK before going on to practice some current Repertoire.