Simple Past and Present Perfect: structural rules and timelines

Section role: supports the 'Decoding the Tense Systems' section while the teacher formalizes the grammar rules discovered during the Jumbled Biography challenge in Section 2, displaying visual timelines and word patterns. Slides: (1) Title — 'Decoding the Tense Systems'; (2) The Core Rule — bullets: finished vs. unfinished time, specific moments vs. general experience; (3) Simple Past Formula — bullets: Subject + V2, regular 'ed' endings, irregular past forms like saw, went, traveled; (4) Present Perfect Formula — bullets: Subject + have/has + V3, auxiliary verb function, irregular participles like seen, been, traveled; (5) Visual Timeline — bullets: graphic showing Simple Past isolated in the past versus Present Perfect bridging past action to the present moment; (6) Time Marker Comparison — table contrasting definite markers like 'yesterday' and 'in 2010' with indefinite markers like 'so far' and 'yet'; (7) Example Walkthrough — sentences contrasting 'She traveled to Japan in 2015' and 'She has traveled to many countries'; (8) Video Transition — prompt to show the 6-step reinforcement video comparing tense contexts; (9) Closing slide — 'Which time marker signals an unfinished time frame in your own life?' — sets up the individual assessment in Section 4.

Lara from Teachy