gistfile1.txt

<?php while ( have_posts() ) : the_post(); ?>

    <div class="single-lesson"> 
        <h5><?php the_title(); ?></h5>
        <p class="lesson-grade"><?php $terms = get_the_terms( $post->ID, 'subject' );
                if ( $terms ) { foreach ( $terms as $term ) { echo '<span class="each-tag">';  echo $term->name; echo '</span>'; } } ?></p>
                <p class="lesson-grade"><?php $terms = get_the_terms( $post->ID, 'grade' );
                if ( $terms ) { foreach ( $terms as $term ) { echo '<span class="each-tag">';  echo $term->name; echo '</span>'; } } ?></p>
                <p class="lesson-theme"><?php $terms = get_the_terms( $post->ID, 'theme' );
                if ( $terms ) { foreach ( $terms as $term ) { echo '<span class="each-tag">';  echo $term->name; echo '</span>'; } } ?></p>
                <p class="download-link"><a href="<?php the_field('lesson_plan'); ?>" target="_blank"><i class="fa fa-arrow-down fa-lg"></i></a></p>        
    </div>
<?php endwhile; ?>